Question

We have a database (SQL Server 2005) which we would like to get under source control. As part of that we are going to have a version table to store the current version number of the database. Is there a way to limit that table to only holding one row? Or is storing the version number in a table a bad idea?

Ended up using this approach:

CREATE TABLE [dbo].[DatabaseVersion]     (         [MajorVersionNumber] [int]  NOT NULL,         [MinorVersionNumber] [int]  NOT NULL,         [RevisionNumber] [int]  NOT NULL     ) GO  Insert DataBaseVersion (MajorVersionNumber,  MinorVersionNumber,  RevisionNumber) values (0, 0, 0) GO  CREATE TRIGGER DataBaseVersion_Prevent_Delete ON DataBaseVersion INSTEAD OF DELETE AS BEGIN     RAISERROR ('DatabaseVersion must always have one Row. (source = INSTEAD OF DELETE)', 16, 1)  END GO  CREATE TRIGGER DataBaseVersion_Prevent_Insert ON DataBaseVersion INSTEAD OF INSERT AS BEGIN     RAISERROR ('DatabaseVersion must always have one Row. (source = INSTEAD OF INSERT)', 16, 1)  END GO 

Answer 1

Use a trigger.