I'm using MS SQL Server 2005 Management Studio Express to create a simple database that will manage customer-specific PDF documents that customers will have access to on the company website. The files will be stored on the server's file system and this database will just manage the links to those documents. I'm building this with MS Visual Studio Web Developer 2008 Express Edition. I'm just building a sample site on my local drive; not production at this point.
If I use the uniqueidentifier data type in a table, how is that unique identifier number generated? Do I have to manually generate it in code when I add an item to that table or is this a GUID that the system generates automatically? Thanks.