Organise ddl statements into separate files per create table (#251)

web/backend/Database/Database.Migrations/scripts/01-schema/04-UserVerification.sql

@@ -0,0 +1,27 @@
+CREATE TABLE UserVerification -- delete verification data when user account is deleted
+(
+    UserVerificationID UNIQUEIDENTIFIER
+        CONSTRAINT DF_UserVerificationID DEFAULT NEWID(),
+
+    UserAccountID UNIQUEIDENTIFIER NOT NULL,
+
+    VerificationDateTime DATETIME NOT NULL
+        CONSTRAINT DF_VerificationDateTime DEFAULT GETDATE(),
+
+    RowVersion ROWVERSION,
+
+    CONSTRAINT PK_UserVerification
+        PRIMARY KEY (UserVerificationID),
+
+    CONSTRAINT FK_UserVerification_UserAccount
+        FOREIGN KEY (UserAccountID)
+            REFERENCES UserAccount (UserAccountID)
+            ON DELETE CASCADE,
+
+    CONSTRAINT AK_UserVerification_UserAccountID
+        UNIQUE (UserAccountID)
+);
+
+CREATE
+NONCLUSTERED INDEX IX_UserVerification_UserAccount
+    ON UserVerification(UserAccountID);