refactor SQL DB CREATE for better maintainance

SQL/EHEC_DB_Query.sql

@@ -107,7 +107,9 @@ CREATE TABLE [dbo].[Patient] (
     [BirthDate] datetime  NOT NULL,
     [Street] nvarchar(max)  NOT NULL,
     [City] nvarchar(max)  NOT NULL,
-	[Region] nvarchar(max) NOT NULL
+	[Region] nvarchar(max) NOT NULL,
+	CONSTRAINT [PK_Patient]
+    PRIMARY KEY CLUSTERED ([PatientId] ASC)
 );
 GO
 
@@ -118,7 +120,9 @@ CREATE TABLE [dbo].[Doctor] (
     [FirstName] nvarchar(max)  NOT NULL,
     [LastName] nvarchar(max)  NOT NULL,
 	[DoctorOrigin] nvarchar(max) NOT NULL,
-	[Region] nvarchar(max) NOT NULL
+	[Region] nvarchar(max) NOT NULL,
+	CONSTRAINT [PK_Doctor]
+    PRIMARY KEY CLUSTERED ([DoctorId] ASC)
 );
 GO
 
@@ -129,7 +133,19 @@ CREATE TABLE [dbo].[Origin] (
     [Name] nvarchar(max)  NOT NULL,
 	[Food] nvarchar(max) NOT NULL,
     [Street] nvarchar(max)  NOT NULL,
-    [City] nvarchar(max)  NOT NULL
+    [City] nvarchar(max)  NOT NULL,
+	CONSTRAINT [PK_Origin]
+    PRIMARY KEY CLUSTERED ([OriginId] ASC)
+);
+GO
+
+-- Creating table 'Result'
+CREATE TABLE [dbo].[Result] (
+    [ResultId] int IDENTITY(1,1) NOT NULL,
+	[ResultUid] nvarchar(max) ,
+    [Name] nvarchar(max)  NOT NULL,
+	CONSTRAINT [PK_Result]
+    PRIMARY KEY CLUSTERED ([ResultId] ASC)
 );
 GO
 
@@ -139,15 +155,21 @@ CREATE TABLE [dbo].[Exam] (
 	[ExamUid] nvarchar(max) ,
     [DoctorId] int  NOT NULL,
 	[PatientId] int NOT NULL,
-    [ResultId] int  NOT NULL
-);
-GO
-
--- Creating table 'Result'
-CREATE TABLE [dbo].[Result] (
-    [ResultId] int IDENTITY(1,1) NOT NULL,
-	[ResultUid] nvarchar(max) ,
-    [Name] nvarchar(max)  NOT NULL,
+    [ResultId] int  NOT NULL,
+	CONSTRAINT [PK_Exam]
+    PRIMARY KEY CLUSTERED ([ExamId] ASC),
+	CONSTRAINT [FK_ResultExam]
+    FOREIGN KEY ([ResultId])
+    REFERENCES [dbo].[Result]([ResultId])
+    ON DELETE NO ACTION ON UPDATE NO ACTION,
+	CONSTRAINT [FK_DoctorExam]
+    FOREIGN KEY ([DoctorId])
+    REFERENCES [dbo].[Doctor]([DoctorId])
+    ON DELETE NO ACTION ON UPDATE NO ACTION,
+	CONSTRAINT [FK_PatientExam]
+    FOREIGN KEY ([PatientId])
+    REFERENCES [dbo].[Patient]([PatientId])
+    ON DELETE NO ACTION ON UPDATE NO ACTION
 );
 GO
 
@@ -156,97 +178,103 @@ CREATE TABLE [dbo].[Origin_Exam] (
     [Origin_ExamId] int IDENTITY(1,1) NOT NULL,
 	[Origin_ExamUid] nvarchar(max) ,
     [OriginId] int  NOT NULL,
-	[ExamId] int NOT NULL
+	[ExamId] int NOT NULL,
+	CONSTRAINT [PK_Origin_Exam]
+    PRIMARY KEY CLUSTERED ([Origin_ExamId] ASC),
+	CONSTRAINT [FK_Origin]
+    FOREIGN KEY ([OriginId])
+    REFERENCES [dbo].[Origin] ([OriginId])
+    ON DELETE NO ACTION ON UPDATE NO ACTION,
+	CONSTRAINT [FK_Exam]
+    FOREIGN KEY ([ExamId])
+    REFERENCES [dbo].[Exam]([ExamId])
+    ON DELETE NO ACTION ON UPDATE NO ACTION
 );
 GO
 
--- --------------------------------------------------
-PRINT 'Creating all PRIMARY KEY constraints';
--- --------------------------------------------------
+
+---- --------------------------------------------------
+--PRINT 'Creating all PRIMARY KEY constraints';
+---- --------------------------------------------------
 -- Creating primary key on [Origin_ExamId] in table 'Origin_Exam'
-ALTER TABLE [dbo].[Origin_Exam]
-ADD CONSTRAINT [PK_Origin_Exam]
-    PRIMARY KEY CLUSTERED ([Origin_ExamId] ASC);
-GO
+--ALTER TABLE [dbo].[Origin_Exam]
+--ADD CONSTRAINT [PK_Origin_Exam]
+--    PRIMARY KEY CLUSTERED ([Origin_ExamId] ASC);
+--GO
 
 -- Creating primary key on [PatientId] in table 'Patient'
-ALTER TABLE [dbo].[Patient]
-ADD CONSTRAINT [PK_Patient]
-    PRIMARY KEY CLUSTERED ([PatientId] ASC);
-GO
+--ALTER TABLE [dbo].[Patient]
+--ADD CONSTRAINT [PK_Patient]
+--    PRIMARY KEY CLUSTERED ([PatientId] ASC);
+--GO
 
 -- Creating primary key on [DoctorId] in table 'Doctor'
-ALTER TABLE [dbo].[Doctor]
-ADD CONSTRAINT [PK_Doctor]
-    PRIMARY KEY CLUSTERED ([DoctorId] ASC);
-GO
+--ALTER TABLE [dbo].[Doctor]
+--ADD CONSTRAINT [PK_Doctor]
+--    PRIMARY KEY CLUSTERED ([DoctorId] ASC);
+--GO
 
 -- Creating primary key on [OriginId] in table 'Origin'
-ALTER TABLE [dbo].[Origin]
-ADD CONSTRAINT [PK_Origin]
-    PRIMARY KEY CLUSTERED ([OriginId] ASC);
-GO
+--ALTER TABLE [dbo].[Origin]
+--ADD CONSTRAINT [PK_Origin]
+--    PRIMARY KEY CLUSTERED ([OriginId] ASC);
+--GO
 
 -- Creating primary key on [ExamId] in table 'Exam'
-ALTER TABLE [dbo].[Exam]
-ADD CONSTRAINT [PK_Exam]
-    PRIMARY KEY CLUSTERED ([ExamId] ASC);
-GO
+--ALTER TABLE [dbo].[Exam]
+--ADD CONSTRAINT [PK_Exam]
+--    PRIMARY KEY CLUSTERED ([ExamId] ASC);
+--GO
 
 -- Creating primary key on [ResultId] in table 'Result'
-ALTER TABLE [dbo].[Result]
-ADD CONSTRAINT [PK_Result]
-    PRIMARY KEY CLUSTERED ([ResultId] ASC);
-GO
+--ALTER TABLE [dbo].[Result]
+--ADD CONSTRAINT [PK_Result]
+--    PRIMARY KEY CLUSTERED ([ResultId] ASC);
+--GO
 
--- --------------------------------------------------
-PRINT 'Creating all FOREIGN KEY constraints';
--- --------------------------------------------------
+---- --------------------------------------------------
+--PRINT 'Creating all FOREIGN KEY constraints';
+---- --------------------------------------------------
 
 -- Creating foreign key on [ResultId] in table 'Exam'
-ALTER TABLE [dbo].[Exam]
-ADD CONSTRAINT [FK_ResultExam]
-    FOREIGN KEY ([ResultId])
-    REFERENCES [dbo].[Result]
-        ([ResultId])
-    ON DELETE NO ACTION ON UPDATE NO ACTION;
-GO
+--ALTER TABLE [dbo].[Exam]
+--ADD CONSTRAINT [FK_ResultExam]
+--    FOREIGN KEY ([ResultId])
+--    REFERENCES [dbo].[Result]([ResultId])
+--    ON DELETE NO ACTION ON UPDATE NO ACTION;
+--GO
 
 -- Creating foreign key on [DoctorId] in table 'Exam'
-ALTER TABLE [dbo].[Exam]
-ADD CONSTRAINT [FK_DoctorExam]
-    FOREIGN KEY ([DoctorId])
-    REFERENCES [dbo].[Doctor]
-        ([DoctorId])
-    ON DELETE NO ACTION ON UPDATE NO ACTION;
-GO
+--ALTER TABLE [dbo].[Exam]
+--ADD CONSTRAINT [FK_DoctorExam]
+--    FOREIGN KEY ([DoctorId])
+--    REFERENCES [dbo].[Doctor]([DoctorId])
+--    ON DELETE NO ACTION ON UPDATE NO ACTION;
+--GO
 
 -- Creating foreign key on [PatientId] in table 'Exam'
-ALTER TABLE [dbo].[Exam]
-ADD CONSTRAINT [FK_PatientExam]
-    FOREIGN KEY ([PatientId])
-    REFERENCES [dbo].[Patient]
-        ([PatientId])
-    ON DELETE NO ACTION ON UPDATE NO ACTION;
-GO
+--ALTER TABLE [dbo].[Exam]
+--ADD CONSTRAINT [FK_PatientExam]
+--    FOREIGN KEY ([PatientId])
+--    REFERENCES [dbo].[Patient]([PatientId])
+--    ON DELETE NO ACTION ON UPDATE NO ACTION;
+--GO
 
 -- Creating foreign key on [OriginId] in table 'Origin_Exam'
-ALTER TABLE [dbo].[Origin_Exam]
-ADD CONSTRAINT [FK_Origin]
-    FOREIGN KEY ([OriginId])
-    REFERENCES [dbo].[Origin]
-        ([OriginId])
-    ON DELETE NO ACTION ON UPDATE NO ACTION;
-GO
+--ALTER TABLE [dbo].[Origin_Exam]
+--ADD CONSTRAINT [FK_Origin]
+--    FOREIGN KEY ([OriginId])
+--    REFERENCES [dbo].[Origin] ([OriginId])
+--    ON DELETE NO ACTION ON UPDATE NO ACTION;
+--GO
 
 -- Creating foreign key on [ExamId] in table 'Origin_Exam'
-ALTER TABLE [dbo].[Origin_Exam]
-ADD CONSTRAINT [FK_Exam]
-    FOREIGN KEY ([ExamId])
-    REFERENCES [dbo].[Exam]
-        ([ExamId])
-    ON DELETE NO ACTION ON UPDATE NO ACTION;
-GO
+--ALTER TABLE [dbo].[Origin_Exam]
+--ADD CONSTRAINT [FK_Exam]
+--    FOREIGN KEY ([ExamId])
+--    REFERENCES [dbo].[Exam]([ExamId])
+--    ON DELETE NO ACTION ON UPDATE NO ACTION;
+--GO
 -- --------------------------------------------------
 PRINT 'Creating all INDEXES';
 -- --------------------------------------------------