diff --git a/db/4_sem/tag_1/TSQL-Einführung/Einführung-01.sql b/db/4_sem/tag_1/TSQL-Einführung/Einführung-01.sql
new file mode 100644
index 0000000..ad87939
--- /dev/null
+++ b/db/4_sem/tag_1/TSQL-Einführung/Einführung-01.sql
@@ -0,0 +1,92 @@
+-- Beispiel 1
+
+-- Variablen Deklaration
+declare @Z1 int, @Firstname varchar(50);
+
+-- Set
+set @Z1 = 100;
+
+-- Print
+print 'Zahl Z1 = ' + cast(@Z1 as varchar)
+
+
+-- Beispiel 2
+declare @Z1 int;
+
+set @Z1 = 1000;
+if @Z1 > 100
+begin
+	print 'Z1 ist eine grosse Zahl';
+end
+else
+begin
+	print 'Z2 ist eine kleine Zahl';
+end
+
+
+-- Beispiel 3
+declare @num int
+set @num =(SELECT COUNT(*) FROM PA_MITARBEITER);
+if @num > 0
+	print 'Total Abteilungen = ' + convert(varchar, @num);
+else
+	print 'keine Abteilungen vorhanden';
+
+
+-- Beispiel 4
+declare @Nr varchar(20), @bez varchar(40);
+select @Nr=ABT_ABTNR, @bez = ABT_BEZ
+	from PA_ABTEILUNG
+	where ABT_ABTNR = 'DV1';
+
+print 'Nr = ' + @Nr + ', Bezeichnung = ' + @bez;
+
+
+-- Beispiel 5
+go
+create procedure CalcSumProc (@Z1 int, @Z2 int, @Result int output)
+as
+set @Result = @Z1 + @Z2;
+go
+
+declare @Sum int, @RetCode int;
+set @Sum = 0;
+exec CalcSumProc 1, 2, @Sum output;
+print 'Sum = ' + cast(@Sum as varchar);
+
+
+-- Beispiel 6
+go
+create function CalcSumFunc (@Z1 int, @Z2 int)
+returns int
+as
+begin
+declare @result int;
+
+set @result = @Z1 + @Z2;
+return @Result
+end
+go
+
+
+
+-- Beispiel 7
+declare @abtnr varchar(20), @abtbez varchar(50);
+
+DECLARE Abteilung_Cursor CURSOR FOR
+	SELECT ABT_ABTNR, ABT_BEZ
+	FROM PA_ABTEILUNG
+	ORDER BY ABT_BEZ;
+
+OPEN Abteilung_Cursor;
+FETCH NEXT FROM Abteilung_Cursor
+	into @abtnr, @abtbez;
+
+WHILE @@FETCH_STATUS = 0
+BEGIN
+	print 'Nr = ' + @abtnr + ', Name = ' + @abtbez
+	FETCH NEXT FROM Abteilung_Cursor
+				into @abtnr, @abtbez;
+END;
+CLOSE Abteilung_Cursor;
+DEALLOCATE Abteilung_Cursor;
diff --git a/db/4_sem/tag_1/TSQL-Einführung/Einführung-02.sql b/db/4_sem/tag_1/TSQL-Einführung/Einführung-02.sql
new file mode 100644
index 0000000..d181f14
--- /dev/null
+++ b/db/4_sem/tag_1/TSQL-Einführung/Einführung-02.sql
@@ -0,0 +1,931 @@
+/*
+*******************************************************************************
+*                                                                             *
+*                SQL Server 2008 / 2008 R2 - Der schnelle Einstieg            *
+*                                                                             *
+*       Kapitel 5 - Transact-SQL - Die Sprache zur Serverprogrammierung       *
+*                                                                             *
+* © 2009/2010, Klemens Konopasek                                              *
+*******************************************************************************
+*/
+
+
+-- Variablen und Datentypen
+-- 5.1.1
+
+
+DECLARE @nachname varchar(50), @vorname varchar(50)
+DECLARE @gebdatum date
+
+SET @nachname = (SELECT PersNachname
+                 FROM tblPersonal
+                 WHERE PersNr = 452)
+SET @vorname = (SELECT PersVorname
+                FROM tblPersonal
+                WHERE PersNr = 452)
+SET @gebdatum = (SELECT PersGebDatum
+                FROM tblPersonal
+                WHERE PersNr = 452)
+SELECT @nachname NN, @vorname VN, @gebdatum Geburtsdatum
+
+
+
+GO
+-- *************************************************************************
+
+
+DECLARE @nachname varchar(50), @vorname varchar(50)
+DECLARE @gebdatum date
+
+SELECT @nachname = PersNachname,
+       @vorname = PersVorname,
+       @gebdatum = PersGebDatum
+FROM tblPersonal
+WHERE PersNr = 452
+
+SELECT @nachname NN, @vorname VN, @gebdatum Geburtsdatum
+
+
+
+
+-- *************************************************************************
+
+
+
+DECLARE @ust tinyint
+DECLARE @netto smallmoney, @brutto smallmoney
+
+SET @ust = 19
+SET @netto = 450
+SET @brutto = @netto * (@ust + 100) / 100
+
+SELECT @netto Netto, @brutto Brutto
+
+
+
+
+-- *************************************************************************
+
+
+DECLARE @nr int
+
+SET @nr = @nr + 3
+SET @nr = @nr * 5
+
+SELECT @nr Nr
+
+
+GO
+-- *************************************************************************
+
+
+
+DECLARE @plz varchar(5)
+
+SET @plz = '8010'
+
+SELECT PersNachname, PersVorname
+FROM tblPersonal
+WHERE PersPlz = @plz
+
+
+GO
+-- *************************************************************************
+
+
+DECLARE @nr int = 3
+SET @nr = @nr + 3
+SET @nr = @nr * 5
+SELECT @nr Nr
+
+
+GO
+-- *************************************************************************
+
+
+
+
+
+
+
+
+-- Benutzerdefinierte Tabellentypen
+-- 5.1.2
+
+CREATE TYPE KundenTab AS TABLE
+(	kdnr int PRIMARY KEY,
+	nachname varchar(50),
+	vorname varchar(50)
+)
+
+GO
+-- *************************************************************************
+
+
+DECLARE @kunden KundenTab
+
+INSERT INTO @kunden (kdnr, nachname, vorname)
+SELECT KdNr, KdNachname, KdVorname
+FROM dbo.tblKunden
+WHERE KdLand = 'D'
+
+
+GO
+-- *************************************************************************
+
+
+
+CREATE PROCEDURE dbo.spTabellenTest
+
+	@kdnamen KundenTab READONLY
+
+AS
+BEGIN
+
+	SELECT UPPER(nachname) + ' ' + vorname AS Kunde
+	FROM @kdnamen
+	ORDER BY 1
+
+END
+
+
+GO
+
+
+DECLARE @kunden KundenTab
+
+INSERT INTO @kunden (kdnr, nachname, vorname)
+SELECT KdNr, KdNachname, KdVorname
+FROM dbo.tblKunden
+WHERE KdLand = 'D'
+
+EXEC dbo.spTabellenTest @kunden
+
+
+GO
+-- *************************************************************************
+
+
+
+
+
+
+
+
+-- Funktionen
+
+-- 5.1.3
+
+
+SELECT @@language
+
+SELECT @@servername
+
+SELECT @@VERSION
+
+SELECT SERVERPROPERTY('ProductVersion')
+
+-- Datumsfunktionen
+
+SELECT DATEADD(week, 3, '01.01.2010')
+
+SELECT DATEDIFF(month, '08.01.2010', '15.11.2010')
+
+SET LANGUAGE german
+SELECT DATENAME(weekday, '23.05.2010')
+SELECT DATEPART(weekday, '23.05.2010')
+
+SET LANGUAGE english
+SELECT DATENAME(weekday, '05.23.2010')
+SELECT DATEPART(weekday, '05.23.2010')
+
+SET LANGUAGE german
+SELECT DAY('20.04.2009') Tag, MONTH('20.04.2009') Monat, YEAR('20.04.2009') Jahr
+
+SELECT GETDATE()
+
+
+SELECT ISDATE('24.12.2008'), ISDATE('240.12.2008')
+
+SELECT CURRENT_TIMESTAMP
+SELECT Sysdatetime(), GETDATE()
+SELECT Sysutcdatetime()
+SELECT Sysdatetimeoffset()
+
+SELECT	Sysdatetimeoffset() AS Graz,
+		Switchoffset(Sysdatetimeoffset(), '-08:00') AS Vancouver
+
+SELECT Todatetimeoffset(Sysdatetime(), '-08:00')
+
+
+-- Mathematische Funktionen
+
+SELECT ROUND(5.129, 2), ROUND(18452, -2), ROUND(1.99,1,1)
+
+SELECT CEILING(5.129)
+
+
+-- Metadatenfunktionen
+
+SELECT DB_NAME(), DB_NAME(1), DB_ID(), DB_ID('master')
+
+SELECT COL_LENGTH('tblArtikel','Artbezeichnung')			-- nur innerhalb der DB möglich!
+
+SELECT COL_LENGTH('wawi.dbo.tblArtikel','Artbezeichnung')   -- von jeder DB aus möglich!
+
+SELECT OBJECT_ID('tblArtikel')
+
+SELECT OBJECT_NAME('1511676433')
+
+SELECT COL_NAME(OBJECT_ID('tblArtikel'), 2)
+
+
+-- Sicherheitsfunktionen
+
+SELECT IS_MEMBER('db_owner')
+
+
+-- Zeichenfolgefunktionen
+
+SELECT ASCII('m'), CHAR(109)
+
+SELECT CHARINDEX(' ','SQL Server')
+
+
+DECLARE @name varchar(30), @vorname varchar(15)
+DECLARE @position int
+    SET @name = 'Petra Konopasek'
+    SET @position = CHARINDEX(' ', @name)
+    SET @vorname = LEFT(@name, @position - 1)
+    SELECT @vorname Vorname
+
+
+SELECT MAX(LEN(PersNachname)) [Längster Name]
+FROM tblPersonal;
+
+SELECT PersVorname + ' ' + UPPER(PersNachname) Name
+FROM tblPersonal
+ORDER BY PersNachname;
+
+SELECT REPLICATE('.', 15 - LEN(PersNachname)) + PersNachname Name
+FROM tblPersonal;
+
+SELECT SOUNDEX('Maier') Maier,
+       SOUNDEX('Meyer') Meyer,
+       SOUNDEX('Mayer') Mayer,
+       SOUNDEX('Peyer') Peyer,
+       SOUNDEX('Ober') Ober,
+       SOUNDEX('Obermann') Obermann,
+       SOUNDEX('Hausmahn') Hausmahn
+
+
+SELECT  ArtBezeichnung + ' kostet € '
+        + ArtVKPreis AS Preise
+FROM tblArtikel;
+
+
+SELECT  ArtBezeichnung + ' kostet € '
+        + STR(ArtVKPreis, 5, 2) AS Preise
+FROM tblArtikel;
+
+
+
+DECLARE @name varchar(30)
+DECLARE @nachname varchar(15)
+DECLARE @position int
+    SET @name = 'Alina Konopasek'
+    SET @position = CHARINDEX(' ', @name)
+    SET @nachname = SUBSTRING(@name, @position + 1, 15)
+    SELECT @nachname Nachname
+
+
+
+SELECT SUBSTRING(@@VERSION, 35, 4) AS Version
+
+
+-- Systemfunktionen
+
+SELECT	SYSDATETIME() As Datum,
+		CONVERT(varchar,SYSDATETIME(), 4) As [Jahr 2-stellig],
+		CONVERT(varchar,SYSDATETIME(), 104) As [Jahr 4-stellig]
+
+
+
+SELECT PersNachname FROM tblPersonal
+WHERE PersEintritt = '01.04.2001';
+
+SELECT PersNachname FROM tblPersonal
+WHERE PersEintritt = '01.04.2001 8:00';
+
+
+SELECT GETDATE() As Datum,
+       CONVERT(datetime,CONVERT(varchar,GETDATE(),4),4)
+       As NurDatum
+
+
+
+SELECT PersNachname FROM tblPersonal
+WHERE CAST(PersEintritt AS DATE)= '01.04.2001';
+
+
+
+SELECT HOST_NAME() As Arbeitsplatz, HOST_ID() As ID
+
+
+
+INSERT INTO tblArtikel (ArtBezeichnung, ArtGruppe,
+                        ArtVKpreis, ArtEKPreis, ArtLief)
+VALUES('Wassereimer 15L', 'GA', 3.99, 2.12, 1003);
+SELECT @@IDENTITY "Neue Artikelnunmmer"
+
+
+
+SELECT KdTitel + ' ' + KdAkadGrad + ' '
+       + KdNachname + ' ' + KdVorname As Kunden
+FROM tblKunden
+ORDER BY KdNachname;
+
+
+
+SELECT ISNULL(KdTitel + ' ','')
+       + ISNULL(KdAkadGrad + ' ', '')
+       + KdNachname + ' ' + KdVorname AS Kunden
+FROM tblKunden
+ORDER BY KdNachname;
+
+
+
+BEGIN TRAN
+
+UPDATE tblArtikel
+SET ArtVKPreis = ArtVKPreis * 0.95
+WHERE ArtVKPreis > 200;
+
+SELECT @@ROWCOUNT "Anzahl um 5% verbilligt"
+
+ROLLBACK TRAN
+
+
+-- Rangfolgefunktionen
+
+
+SELECT Artbezeichnung AS Bezeichnung,
+       ArtVKPreis AS Preis,
+       RANK() OVER( ORDER BY ArtVKPreis DESC) AS Rang
+FROM tblArtikel;
+
+
+SELECT Artbezeichnung Bezeichnung,
+       ArtVKPreis Preis,
+       ArtGruppe Gruppe,
+       RANK() OVER( PARTITION BY ArtGruppe
+       ORDER BY ArtVKPreis DESC) AS Rang
+FROM dbo.tblArtikel;
+
+
+
+
+SELECT Artbezeichnung Bezeichnung,
+       ArtVKPreis Preis,
+       DENSE_RANK() OVER(ORDER BY ArtVKPreis DESC) AS Rang
+FROM dbo.tblArtikel;
+
+
+
+SELECT PersNachname AS Nachname,
+       PersVorname As Vorname,
+       NTILE(5) OVER( ORDER BY PersGebDatum) AS Gruppe
+FROM tblPersonal;
+
+
+SELECT Artbezeichnung AS Bezeichnung,
+       ArtVKPreis AS Preis,
+       ROW_NUMBER() OVER( ORDER BY ArtVKPreis DESC) AS "lfd. Nr."
+FROM tblArtikel;
+
+
+
+
+-- Hierarchie-ID-Funktionen
+
+DECLARE @root hierarchyid
+SET @root = hierarchyid::GetRoot()
+SELECT @root.ToString() AS Wurzeleintrag, @root AS WurzelID
+
+
+DECLARE @nachfolger hierarchyid
+SET @nachfolger = @root.GetDescendant(NULL, NULL)
+SELECT @nachfolger.ToString() AS Nachfolger
+
+SELECT @nachfolger.IsDescendantOf(@root) AS IstNachfolger1,
+@root.IsDescendantOf(@nachfolger) AS IstNachfolger2
+
+SELECT @root.GetLevel() AS LevelRoot,
+@nachfolger.GetLevel() AS LevelNachfolger
+
+DECLARE @vorgaenger hierarchyid
+SET @vorgaenger = @nachfolger.GetAncestor(1)
+SELECT @vorgaenger.ToString() As Vorgänger
+
+
+
+-- *************************************************************************
+-- Kontrollstrukturen
+
+
+-- 5.1.4
+GO
+
+
+DECLARE @monat tinyint
+    SET @monat = MONTH(GETDATE())
+    IF @monat <= 6
+        PRINT 'Wir sind in der ersten Jahreshälfte.'
+    ELSE
+        PRINT 'Wir befinden uns im zweiten Halbjahr.'
+
+
+-- *************************************************************************
+GO
+
+DECLARE @kunde int
+DECLARE @interesse char(3)
+
+    SET @kunde = 136
+    SET @interesse = 'HUG'
+
+    INSERT INTO tblKundeninteressen
+    VALUES (@kunde, @interesse)
+
+
+SELECT * FROM tblKunden;
+SELECT * FROM tblKundenInteressen;
+
+
+GO
+-- *************************************************************************
+
+DECLARE @kunde int
+DECLARE @interesse char(3)
+
+    SET @kunde = 136
+    SET @interesse = 'HUG'
+
+    IF (SELECT COUNT(*) FROM tblKundenInteressen
+        WHERE KdNr = @kunde AND IntCode = @interesse) = 1
+        PRINT 'Zuordnung bereits vorhanden.'
+    ELSE
+        INSERT INTO tblKundenInteressen
+        VALUES (@kunde, @interesse);
+
+
+GO
+-- *************************************************************************
+
+
+BEGIN TRAN
+
+DECLARE @kunde int
+DECLARE @interesse char(3)
+
+    SET @kunde = 136
+    SET @interesse = 'SPO'
+
+    IF (SELECT COUNT(*) FROM tblKundenInteressen
+        WHERE KdNr = @kunde AND IntCode = @interesse) = 1
+        PRINT 'Zuordnung bereits vorhanden.'
+    ELSE
+    BEGIN
+        INSERT INTO tblKundenInteressen
+        VALUES (@kunde, @interesse);
+        PRINT 'Interesse wurde zugewiesen.'
+    END
+
+
+--ROLLBACK TRAN
+GO
+-- *************************************************************************
+
+
+
+IF MONTH(SYSDATETIME()) IN(1,2,3,4,5)
+    PRINT 'Vorsaison'
+ELSE
+    IF MONTH(SYSDATETIME()) IN(6,7,8,9)
+        PRINT 'Hauptsaison'
+    ELSE
+        PRINT 'Nachsaison'
+
+
+
+
+-- *************************************************************************
+
+
+IF MONTH(SYSDATETIME()) IN(1,2,3,4,5)
+    PRINT 'Vorsaison'
+ELSE
+    IF MONTH(SYSDATETIME()) IN(6,7,8,9)
+    BEGIN
+        PRINT 'Hauptsaison'
+        PRINT 'Hier ist alles sehr teuer.'
+    END
+    ELSE
+        PRINT 'Nachsaison'
+
+
+
+-- *************************************************************************
+
+
+DECLARE @kunde int
+DECLARE @interesse char(3)
+
+    SET @kunde = 132
+    SET @interesse = 'SPO'
+
+    IF (SELECT COUNT(*) FROM tblKundenInteressen
+        WHERE KdNr = @kunde AND IntCode = @interesse) = 1
+        OR (SELECT KdAktiv FROM tblKunden
+            WHERE KdNr = @kunde) = 0
+        PRINT 'Zuordnung bereits vorhanden oder Kunde nicht mehr aktiv.'
+    ELSE
+    BEGIN
+        INSERT INTO tblKundenInteressen
+        VALUES (@kunde, @interesse);
+        PRINT 'Interesse wurde zugewiesen.'
+    END
+
+
+
+-- *************************************************************************
+
+
+
+DECLARE @wotag varchar(10)
+SET @wotag = CASE DATEPART(weekday, SYSDATETIME())
+             WHEN 1 THEN 'Montag'
+             WHEN 2 THEN 'Dienstag'
+             WHEN 3 THEN 'Mittwoch'
+             WHEN 4 THEN 'Donnerstag'
+             WHEN 5 THEN 'Freistag'
+             WHEN 6 THEN 'Samstag'
+             ELSE 'Sonntag'
+             END
+SELECT @wotag [Heute ist]
+
+
+
+-- *************************************************************************
+
+
+DECLARE @typ varchar(10)
+SET @typ = CASE WHEN DATEPART(weekday, GETDATE()) < 6
+           THEN 'Arbeitstag'
+           ELSE 'Wochenende' END
+SELECT @typ "Heute ist"
+
+
+
+
+-- *************************************************************************
+
+
+SELECT CASE PersGeschlecht WHEN 1 THEN 'Frau' ELSE 'Herr' END Anrede,
+       PersVorname Vorname,
+       PersNachname Nachname
+FROM tblPersonal
+
+
+
+-- *************************************************************************
+
+-- Cursor für Datenzugriffe einsetzen
+
+
+-- 5.1.5
+
+
+DECLARE @kdnr int
+DECLARE @nachname varchar(50)
+
+
+DECLARE kunden_cursor CURSOR LOCAL STATIC
+FOR
+    SELECT KdNr, KdNachname
+    FROM tblKunden
+    WHERE KdAktiv = 1
+
+OPEN kunden_cursor
+FETCH NEXT FROM kunden_cursor INTO @kdnr, @nachname
+
+
+WHILE @@fetch_status = 0
+BEGIN
+    --...
+    FETCH NEXT FROM kunden_cursor INTO @kdnr, @nachname
+END
+
+
+CLOSE kunden_cursor
+DEALLOCATE kunden_cursor
+
+
+
+-- *************************************************************************
+
+-- Transaktionssteuerung
+
+
+-- 5.2.1
+
+DELETE FROM tblKunden WHERE KdAktiv = 0;
+
+
+
+-- 5.2.2
+
+SELECT * FROM tblTestpersonal;
+
+
+UPDATE tblTestpersonal
+SET Nachname = 'Untermann'
+WHERE Nr = 101;
+
+
+SELECT *
+FROM tblTestpersonal
+WHERE Nr = 101;
+
+
+ROLLBACK TRAN
+
+
+BEGIN TRANSACTION
+
+
+DELETE FROM tblTestpersonal
+WHERE Abtlg IN('MA', 'EK');
+
+
+INSERT INTO tblTestpersonal
+VALUES(700, 'Deutschmann', 'MA', SYSDATETIME());
+
+
+SELECT * FROM tblTestpersonal ORDER BY Nr;
+
+
+ROLLBACK TRANSACTION
+
+
+SELECT * FROM tblTestpersonal ORDER BY Nr;
+
+
+BEGIN TRANSACTION
+
+
+DELETE FROM tblTestpersonal
+WHERE Abtlg = 'GL';
+
+
+INSERT INTO tblTestpersonal
+VALUES(700, 'Deutschmann', 'MA', SYSDATETIME());
+
+
+COMMIT TRANSACTION
+
+
+
+-- *************************************************************************
+
+-- SET-Optionen verwenden
+
+-- 5.3
+
+
+SET ANSI_NULLS ON
+DECLARE @agrad varchar(10)
+SET @agrad = Null
+
+SELECT PersNachname, PersAkadGrad
+FROM tblPersonal
+WHERE PersAkadGRad = @agrad;
+
+
+
+GO
+
+
+SET ANSI_NULLS OFF
+DECLARE @agrad varchar(10)
+SET @agrad = Null
+
+SELECT PersNachname, PersAkadGrad
+FROM tblPersonal
+WHERE PersAkadGRad != @agrad;
+
+
+GO
+-- *************************************************************************
+
+SELECT PersAkadGrad + ' ' + PersNachname AS Mitarbeiter
+FROM tblPersonal;
+
+
+SET CONCAT_NULL_YIELDS_NULL OFF
+
+SELECT LTRIM(PersAkadGrad + ' ' + PersNachname) AS Mitarbeiter
+FROM tblPersonal;
+
+SET CONCAT_NULL_YIELDS_NULL ON
+
+SELECT ISNULL(PersAkadGrad + ' ', '') + PersNachname AS Mitarbeiter
+FROM tblPersonal;
+
+
+GO
+-- *************************************************************************
+
+SET DATEFIRST 1
+SELECT DATEPART(weekday, '01.01.2010') As Tag
+
+SET DATEFIRST 7
+SELECT DATEPART(weekday, '01.01.2010') As Tag
+
+-- *************************************************************************
+
+SET DATEFORMAT dmy
+DECLARE @datum datetime
+SET @datum = '15.08.2010'
+
+-- *************************************************************************
+
+SET IDENTITY_INSERT tblArtikel ON
+
+INSERT INTO tblArtikel (ArtNr, ArtBezeichnung, ArtGruppe,
+                        ArtVKpreis, ArtEKPreis, ArtLief)
+VALUES (2222, 'Gartenschlauch 15m', 'GA', 23.99,
+        17.11, 1003);
+
+
+
+-- *************************************************************************
+
+SELECT langid, name, alias, dateformat, datefirst
+FROM master.sys.syslanguages;
+
+SET LANGUAGE english
+SET LANGUAGE français
+SET LANGUAGE german
+SET LANGUAGE latviešu
+
+
+-- *************************************************************************
+
+SET QUOTED_IDENTIFIER OFF
+CREATE TABLE quot_id_test
+( ID int,
+  "Kunden Name" varchar(60) );
+
+
+-- *************************************************************************
+
+SET ROWCOUNT 5
+
+SELECT PersNr, PersNachname, Persvorname
+FROM tblPersonal
+ORDER BY 1;
+
+SET ROWCOUNT 0
+
+
+
+
+-- *************************************************************************
+
+-- Fehlerbehandlung
+
+-- 5.4
+
+
+SET NOCOUNT ON
+
+DECLARE @gruppe char(2), @name varchar(30)
+
+SET @gruppe = 'GE'
+SET @name = 'Geschirr'
+
+INSERT INTO dbo.tblArtikelGruppen (ArtGr, ArtGrText)
+VALUES (@gruppe, @name);
+
+IF @@ROWCOUNT = 0
+    SELECT 'Fehler!' As Ergebnis
+ELSE
+    SELECT 'Erledigt ;-)' As Ergebnis
+
+
+GO
+
+-- Fehler "vermeiden"
+
+SET NOCOUNT ON
+
+DECLARE @gruppe char(2), @name varchar(30)
+
+SET @gruppe = 'GE'
+SET @name = 'Geschirr'
+
+IF exists ( SELECT *
+            FROM dbo.tblArtikelGruppen
+            WHERE ArtGr = @gruppe)
+    SELECT 'Fehler!' As Ergebnis
+ELSE
+BEGIN
+    INSERT INTO dbo.tblArtikelGruppen
+    VALUES (@gruppe, @name);
+    SELECT 'Erledigt ;-)' As Ergebnis
+END
+
+
+GO
+
+-- Fehler "behandeln"
+
+
+SET NOCOUNT ON
+
+DECLARE @gruppe char(2), @name varchar(30)
+
+SET @gruppe = 'GE'
+SET @name = 'Geschirr'
+
+BEGIN TRY
+    INSERT INTO dbo.tblArtikelGruppen
+    VALUES (@gruppe, @name);
+    SELECT 'Erledigt ;-)' As Ergebnis
+END TRY
+BEGIN CATCH
+    SELECT 'Fehler!' As Ergebnis
+END CATCH
+
+
+
+GO
+
+-- inkl. Transaktion
+
+
+SET NOCOUNT ON
+
+DECLARE @gruppe char(2), @name varchar(30)
+
+SET @gruppe = 'GE'
+SET @name = 'Geschirr'
+
+BEGIN TRY
+    BEGIN TRANSACTION
+
+    INSERT INTO dbo.tblArtikelGruppen
+    VALUES (@gruppe, @name);
+
+    COMMIT TRANSACTION
+
+    SELECT 'Erledigt ;-)' As Ergebnis
+END TRY
+BEGIN CATCH
+    ROLLBACK TRANSACTION
+    SELECT 'Fehler!' As Ergebnis
+END CATCH
+
+
+GO
+
+
+
+-- Ausgabe Fehlermeldung
+
+SET NOCOUNT ON
+
+DECLARE @gruppe char(2), @name varchar(30)
+
+SET @gruppe = 'GE'
+SET @name = 'Geschirr'
+
+BEGIN TRY
+
+    BEGIN TRANSACTION
+
+    INSERT INTO dbo.tblArtikelGruppen
+    VALUES (@gruppe, @name);
+
+    COMMIT TRANSACTION
+
+    SELECT 'Erledigt ;-)' As Ergebnis
+END TRY
+BEGIN CATCH
+    ROLLBACK
+    SELECT ERROR_MESSAGE() As Ergebnis
+END CATCH
+
+
+GO
diff --git a/db/4_sem/tag_1/procedures.sql b/db/4_sem/tag_1/procedures.sql
new file mode 100644
index 0000000..499c1fb
--- /dev/null
+++ b/db/4_sem/tag_1/procedures.sql
@@ -0,0 +1,27 @@
+use Berater;
+go
+
+create FUNCTION fBestverdiener()
+RETURNS varchar(100)
+
+AS BEGIN
+DECLARE @nr int,
+    @nachname varchar(50),
+    @vorname varchar(50),
+    @aufgabe varchar(30)
+--set nocount on
+
+SELECT @nr = b.BERATERID,
+    @nachname = b.BERATERNAME,
+    @aufgabe = a.AUFGABE
+FROM BERATER b INNER JOIN AUFGABE a
+ON b.AUFGABEID = a.AUFGABEID
+WHERE b.STUNDENLOHN = (SELECT MAX(STUNDENLOHN)
+FROM BERATER)
+
+Return convert(varchar,@nr) + ',' + @nachname + ',' + @aufgabe
+END
+go
+
+
+select dbo.fBestverdiener(), BERATERNAME FROM BERATER;
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/action_set_name b/vagrant/webtech/.vagrant/machines/default/virtualbox/action_set_name
deleted file mode 100644
index 33d4062..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/action_set_name
+++ /dev/null
@@ -1 +0,0 @@
-1503757949
\ No newline at end of file
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/creator_uid b/vagrant/webtech/.vagrant/machines/default/virtualbox/creator_uid
deleted file mode 100644
index e37d32a..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/creator_uid
+++ /dev/null
@@ -1 +0,0 @@
-1000
\ No newline at end of file
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/id b/vagrant/webtech/.vagrant/machines/default/virtualbox/id
deleted file mode 100644
index 574be8c..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/id
+++ /dev/null
@@ -1 +0,0 @@
-59196ade-8d6d-414e-9803-84ceeb7bffe8
\ No newline at end of file
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/index_uuid b/vagrant/webtech/.vagrant/machines/default/virtualbox/index_uuid
deleted file mode 100644
index 81a05f3..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/index_uuid
+++ /dev/null
@@ -1 +0,0 @@
-84a7ea016bff42d6a81f0e24e28c5803
\ No newline at end of file
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/private_key b/vagrant/webtech/.vagrant/machines/default/virtualbox/private_key
deleted file mode 100644
index 99fa1c8..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/private_key
+++ /dev/null
@@ -1,27 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIIEpAIBAAKCAQEAmaCHhayjEjIDSfuFK/YVpOcFdbGKdCaQAUS8EQcfbT7o4Ns6
-Yq3dYitvqeC73Hda1neGEIa6EjRAUXeL4b0RAw2R0wSexwmM4levWa6A3/4LtD1i
-jxVyDgI834Ime2TEk7pHf3s0v5fThB1/eS5qGeCqC3nNfZxpXKLeAl+oCUesGMgd
-lr5hZ/Dr78hFKKeOKCXtgp+NIxokRgWgicrnwTlaSRuWVf8zSZo6h6hG4bqMAOjR
-6/duTLe2YusAvWedPJyJ7dQIge9gO9a1skhfVlk8p0Mnt0qeK2zNHKk4M8dNTUVG
-dAVpPaTU2oSGkKjJkf1MbUm4ArKgRAboA8K+FQIDAQABAoIBAEU/c/cQU00vWAYw
-Jt4jBayYKgDcL2GdxEmeFvvB7yuKMOSyTQYQAvtuQt4bG/MLpdmIdNjcMeFkxh0y
-us3dMF7k7fdlXMCxEF0yUyskmpjc5Z+wD84ZR5kC7zd8biYuzOEeFX5kJem64S/r
-L/uKrW7OszeLBtJ4/5EvJM2DGrZbcml7P4WAWli+aVFU2fCheRR5JbntdmlKVfZw
-uFzsbggOiSkXOiBi7bM/aapS6RsMWO4cNjPeu6YDzxiH7Xybfx66BxLmH2bkQTD8
-TWiCpO+1iX9GLeT1jln37VBsnkpIbFj0ngsau3Da+Z8TXoENI2Y1W76FyFf0Rkip
-ClzKkZ0CgYEAyiNz6OWUnE44dvTIM90Vive+ZYId37ABEmdnuyo2uS/FaPwfrAEz
-DgAgF3IVJj3XoQtPmPgxQcsJqv1siURObEx5/sj3zvalhsUVjZ//ROyQdtYrbAnt
-AsRWpuWuao0Jc54ag5Du5r9+iM/7s8zfmRMnvZ6aS+Ye3ArBLFcURFsCgYEAwo/z
-AkIwPqOh0i9HwiUoz4gwMF8cXH6kpBU9p2pEBcPJz7KQCAqXNqSxkKZZ7b7ePz+z
-GKCtWaQP8UZAzvoVBnSrlpD5fuOAeo1458Nj+yKFMa7h6FlNY/HlFJOaBlg7F+tr
-5yx22BS71QFvccfjUmtmDcgPVoBILiXZaKx90k8CgYAvuu1cuhE8U1AL7sLzVCoJ
-FXTU3UOWlSW7pcUdsdsYIUqY/qev4tyeWrM5Ngv+aq3m7hfOhBSFd58BzDN7ujBW
-bDyGSAgTy7PMPe9X8MbDDKUUGoBIU5OuipP3dtaXfFQWA+g41tlCjUcgoRPLIf5O
-U/KXWMMQVvdEeBmjEbDMbwKBgQCdsYqm4/qyanH4J7Yjl3aybpGQQyZ7mXHcRBMK
-pEip23ywyOuQePUCpw38TbhJyA/ed8SzS1f1ddIuHmDc4Tk1WE7S5IIz5DT4H75F
-KsrYe6w1DqevaOIfBapEuTV3uv96baexYQqaLIPpKxamw/ptjPrUZLh5xdO7A5Zp
-DpWUZQKBgQCRlx5nZFhzw+N4e2CpyhZO/7n/FYP68uDnIap8sLtaUhFQsnO9zVVR
-27P3obOh1LLuzeS6Uy5CjE2lP/S7ESZjXxnH1o7ng1VI40Rj6c8nVG7EFoPg9UIy
-y/nJebdpad9gjAwJn4P9fx+vf1rvj9Q0iH0VKELGCNBqMVGB8liHEg==
------END RSA PRIVATE KEY-----
diff --git a/vagrant/webtech/.vagrant/machines/default/virtualbox/synced_folders b/vagrant/webtech/.vagrant/machines/default/virtualbox/synced_folders
deleted file mode 100644
index 249ce58..0000000
--- a/vagrant/webtech/.vagrant/machines/default/virtualbox/synced_folders
+++ /dev/null
@@ -1 +0,0 @@
-{"rsync":{"/vagrant":{"type":"rsync","guestpath":"/vagrant","hostpath":"/home/andreas/git_repos/ibz_repos/ibz/vagrant/webtech","disabled":false,"__vagrantfile":true,"owner":"vagrant","group":"vagrant"}},"virtualbox":{"/var/www/html":{"guestpath":"/var/www/html","hostpath":"/home/andreas/git_repos/ibz_repos/ibz/web/1_sem","disabled":false,"__vagrantfile":true}}}
\ No newline at end of file
diff --git a/vagrant/webtech/Vagrantfile b/vagrant/webtech/Vagrantfile
index 73401a7..da4989e 100644
--- a/vagrant/webtech/Vagrantfile
+++ b/vagrant/webtech/Vagrantfile
@@ -12,7 +12,7 @@ Vagrant.configure("2") do |config|
 
   # Every Vagrant development environment requires a box. You can search for
   # boxes at https://atlas.hashicorp.com/search.
-  config.vm.box = "debian-VAGRANTSLASH-stretch64"
+  config.vm.box = "debian/stretch64"
 
   # Disable automatic box update checking. If you disable this, then
   # boxes will only be checked for updates when the user runs
@@ -66,7 +66,7 @@ Vagrant.configure("2") do |config|
   # documentation for more information about their specific syntax and use.
    config.vm.provision "shell", inline: <<-SHELL
      apt-get update
-     apt-get install -y apache2
+     apt-get install -y apache2 php7.0
    SHELL
 
 end
diff --git a/web/1_sem/index.html b/web/1_sem/index.html
new file mode 100644
index 0000000..766401d
--- /dev/null
+++ b/web/1_sem/index.html
@@ -0,0 +1,368 @@
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+    <title>Apache2 Debian Default Page: It works</title>
+    <style type="text/css" media="screen">
+  * {
+    margin: 0px 0px 0px 0px;
+    padding: 0px 0px 0px 0px;
+  }
+
+  body, html {
+    padding: 3px 3px 3px 3px;
+
+    background-color: #D8DBE2;
+
+    font-family: Verdana, sans-serif;
+    font-size: 11pt;
+    text-align: center;
+  }
+
+  div.main_page {
+    position: relative;
+    display: table;
+
+    width: 800px;
+
+    margin-bottom: 3px;
+    margin-left: auto;
+    margin-right: auto;
+    padding: 0px 0px 0px 0px;
+
+    border-width: 2px;
+    border-color: #212738;
+    border-style: solid;
+
+    background-color: #FFFFFF;
+
+    text-align: center;
+  }
+
+  div.page_header {
+    height: 99px;
+    width: 100%;
+
+    background-color: #F5F6F7;
+  }
+
+  div.page_header span {
+    margin: 15px 0px 0px 50px;
+
+    font-size: 180%;
+    font-weight: bold;
+  }
+
+  div.page_header img {
+    margin: 3px 0px 0px 40px;
+
+    border: 0px 0px 0px;
+  }
+
+  div.table_of_contents {
+    clear: left;
+
+    min-width: 200px;
+
+    margin: 3px 3px 3px 3px;
+
+    background-color: #FFFFFF;
+
+    text-align: left;
+  }
+
+  div.table_of_contents_item {
+    clear: left;
+
+    width: 100%;
+
+    margin: 4px 0px 0px 0px;
+
+    background-color: #FFFFFF;
+
+    color: #000000;
+    text-align: left;
+  }
+
+  div.table_of_contents_item a {
+    margin: 6px 0px 0px 6px;
+  }
+
+  div.content_section {
+    margin: 3px 3px 3px 3px;
+
+    background-color: #FFFFFF;
+
+    text-align: left;
+  }
+
+  div.content_section_text {
+    padding: 4px 8px 4px 8px;
+
+    color: #000000;
+    font-size: 100%;
+  }
+
+  div.content_section_text pre {
+    margin: 8px 0px 8px 0px;
+    padding: 8px 8px 8px 8px;
+
+    border-width: 1px;
+    border-style: dotted;
+    border-color: #000000;
+
+    background-color: #F5F6F7;
+
+    font-style: italic;
+  }
+
+  div.content_section_text p {
+    margin-bottom: 6px;
+  }
+
+  div.content_section_text ul, div.content_section_text li {
+    padding: 4px 8px 4px 16px;
+  }
+
+  div.section_header {
+    padding: 3px 6px 3px 6px;
+
+    background-color: #8E9CB2;
+
+    color: #FFFFFF;
+    font-weight: bold;
+    font-size: 112%;
+    text-align: center;
+  }
+
+  div.section_header_red {
+    background-color: #CD214F;
+  }
+
+  div.section_header_grey {
+    background-color: #9F9386;
+  }
+
+  .floating_element {
+    position: relative;
+    float: left;
+  }
+
+  div.table_of_contents_item a,
+  div.content_section_text a {
+    text-decoration: none;
+    font-weight: bold;
+  }
+
+  div.table_of_contents_item a:link,
+  div.table_of_contents_item a:visited,
+  div.table_of_contents_item a:active {
+    color: #000000;
+  }
+
+  div.table_of_contents_item a:hover {
+    background-color: #000000;
+
+    color: #FFFFFF;
+  }
+
+  div.content_section_text a:link,
+  div.content_section_text a:visited,
+   div.content_section_text a:active {
+    background-color: #DCDFE6;
+
+    color: #000000;
+  }
+
+  div.content_section_text a:hover {
+    background-color: #000000;
+
+    color: #DCDFE6;
+  }
+
+  div.validator {
+  }
+    </style>
+  </head>
+  <body>
+    <div class="main_page">
+      <div class="page_header floating_element">
+        <img src="/icons/openlogo-75.png" alt="Debian Logo" class="floating_element"/>
+        <span class="floating_element">
+          Apache2 Debian Default Page
+        </span>
+      </div>
+<!--      <div class="table_of_contents floating_element">
+        <div class="section_header section_header_grey">
+          TABLE OF CONTENTS
+        </div>
+        <div class="table_of_contents_item floating_element">
+          <a href="#about">About</a>
+        </div>
+        <div class="table_of_contents_item floating_element">
+          <a href="#changes">Changes</a>
+        </div>
+        <div class="table_of_contents_item floating_element">
+          <a href="#scope">Scope</a>
+        </div>
+        <div class="table_of_contents_item floating_element">
+          <a href="#files">Config files</a>
+        </div>
+      </div>
+-->
+      <div class="content_section floating_element">
+
+
+        <div class="section_header section_header_red">
+          <div id="about"></div>
+          It works!
+        </div>
+        <div class="content_section_text">
+          <p>
+                This is the default welcome page used to test the correct 
+                operation of the Apache2 server after installation on Debian systems.
+                If you can read this page, it means that the Apache HTTP server installed at
+                this site is working properly. You should <b>replace this file</b> (located at
+                <tt>/var/www/html/index.html</tt>) before continuing to operate your HTTP server.
+          </p>
+
+
+          <p>
+                If you are a normal user of this web site and don't know what this page is
+                about, this probably means that the site is currently unavailable due to
+                maintenance.
+                If the problem persists, please contact the site's administrator.
+          </p>
+
+        </div>
+        <div class="section_header">
+          <div id="changes"></div>
+                Configuration Overview
+        </div>
+        <div class="content_section_text">
+          <p>
+                Debian's Apache2 default configuration is different from the
+                upstream default configuration, and split into several files optimized for
+                interaction with Debian tools. The configuration system is
+                <b>fully documented in
+                /usr/share/doc/apache2/README.Debian.gz</b>. Refer to this for the full
+                documentation. Documentation for the web server itself can be
+                found by accessing the <a href="/manual">manual</a> if the <tt>apache2-doc</tt>
+                package was installed on this server.
+
+          </p>
+          <p>
+                The configuration layout for an Apache2 web server installation on Debian systems is as follows:
+          </p>
+          <pre>
+/etc/apache2/
+|-- apache2.conf
+|       `--  ports.conf
+|-- mods-enabled
+|       |-- *.load
+|       `-- *.conf
+|-- conf-enabled
+|       `-- *.conf
+|-- sites-enabled
+|       `-- *.conf
+          </pre>
+          <ul>
+                        <li>
+                           <tt>apache2.conf</tt> is the main configuration
+                           file. It puts the pieces together by including all remaining configuration
+                           files when starting up the web server.
+                        </li>
+
+                        <li>
+                           <tt>ports.conf</tt> is always included from the
+                           main configuration file. It is used to determine the listening ports for
+                           incoming connections, and this file can be customized anytime.
+                        </li>
+
+                        <li>
+                           Configuration files in the <tt>mods-enabled/</tt>,
+                           <tt>conf-enabled/</tt> and <tt>sites-enabled/</tt> directories contain
+                           particular configuration snippets which manage modules, global configuration
+                           fragments, or virtual host configurations, respectively.
+                        </li>
+
+                        <li>
+                           They are activated by symlinking available
+                           configuration files from their respective
+                           *-available/ counterparts. These should be managed
+                           by using our helpers
+                           <tt>
+                                a2enmod,
+                                a2dismod,
+                           </tt>
+                           <tt>
+                                a2ensite,
+                                a2dissite,
+                            </tt>
+                                and
+                           <tt>
+                                a2enconf,
+                                a2disconf
+                           </tt>. See their respective man pages for detailed information.
+                        </li>
+
+                        <li>
+                           The binary is called apache2. Due to the use of
+                           environment variables, in the default configuration, apache2 needs to be
+                           started/stopped with <tt>/etc/init.d/apache2</tt> or <tt>apache2ctl</tt>.
+                           <b>Calling <tt>/usr/bin/apache2</tt> directly will not work</b> with the
+                           default configuration.
+                        </li>
+          </ul>
+        </div>
+
+        <div class="section_header">
+            <div id="docroot"></div>
+                Document Roots
+        </div>
+
+        <div class="content_section_text">
+            <p>
+                By default, Debian does not allow access through the web browser to
+                <em>any</em> file apart of those located in <tt>/var/www</tt>,
+                <a href="http://httpd.apache.org/docs/2.4/mod/mod_userdir.html" rel="nofollow">public_html</a>
+                directories (when enabled) and <tt>/usr/share</tt> (for web
+                applications). If your site is using a web document root
+                located elsewhere (such as in <tt>/srv</tt>) you may need to whitelist your
+                document root directory in <tt>/etc/apache2/apache2.conf</tt>.
+            </p>
+            <p>
+                The default Debian document root is <tt>/var/www/html</tt>. You
+                can make your own virtual hosts under /var/www. This is different
+                to previous releases which provides better security out of the box.
+            </p>
+        </div>
+
+        <div class="section_header">
+          <div id="bugs"></div>
+                Reporting Problems
+        </div>
+        <div class="content_section_text">
+          <p>
+                Please use the <tt>reportbug</tt> tool to report bugs in the
+                Apache2 package with Debian. However, check <a
+                href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?ordering=normal;archive=0;src=apache2;repeatmerged=0"
+                rel="nofollow">existing bug reports</a> before reporting a new bug.
+          </p>
+          <p>
+                Please report bugs specific to modules (such as PHP and others)
+                to respective packages, not to the web server itself.
+          </p>
+        </div>
+
+
+
+
+      </div>
+    </div>
+    <div class="validator">
+    </div>
+  </body>
+</html>
+
diff --git a/web/3_sem/tomcat/ROOT/META-INF/context.xml b/web/3_sem/tomcat/ROOT/META-INF/context.xml
new file mode 100644
index 0000000..00e2ff6
--- /dev/null
+++ b/web/3_sem/tomcat/ROOT/META-INF/context.xml
@@ -0,0 +1,2 @@
+<Context path=""
+	antiResourceLocking="false" />
diff --git a/web/3_sem/tomcat/ROOT/index.html b/web/3_sem/tomcat/ROOT/index.html
new file mode 100644
index 0000000..5f50007
--- /dev/null
+++ b/web/3_sem/tomcat/ROOT/index.html
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+    <title>Apache Tomcat</title>
+</head>
+
+<body>
+<h1>It works !</h1>
+
+<p>If you're seeing this page via a web browser, it means you've setup Tomcat successfully. Congratulations!</p>
+ 
+<p>This is the default Tomcat home page. It can be found on the local filesystem at: <code>/var/lib/tomcat8/webapps/ROOT/index.html</code></p>
+
+<p>Tomcat8 veterans might be pleased to learn that this system instance of Tomcat is installed with <code>CATALINA_HOME</code> in <code>/usr/share/tomcat8</code> and <code>CATALINA_BASE</code> in <code>/var/lib/tomcat8</code>, following the rules from <code>/usr/share/doc/tomcat8-common/RUNNING.txt.gz</code>.</p>
+
+<p>You might consider installing the following packages, if you haven't already done so:</p>
+
+<p><b>tomcat8-docs</b>: This package installs a web application that allows to browse the Tomcat 8 documentation locally. Once installed, you can access it by clicking <a href="docs/">here</a>.</p>
+
+<p><b>tomcat8-examples</b>: This package installs a web application that allows to access the Tomcat 8 Servlet and JSP examples. Once installed, you can access it by clicking <a href="examples/">here</a>.</p>
+
+<p><b>tomcat8-admin</b>: This package installs two web applications that can help managing this Tomcat instance. Once installed, you can access the <a href="manager/html">manager webapp</a> and the <a href="host-manager/html">host-manager webapp</a>.</p>
+
+<p>NOTE: For security reasons, using the manager webapp is restricted to users with role "manager-gui". The host-manager webapp is restricted to users with role "admin-gui". Users are defined in <code>/etc/tomcat8/tomcat-users.xml</code>.</p>
+
+</body>
+</html>