I have what I believe to be SQL Server 2008 Express. There appears to be another thing on the market, to wit, SQL Server 2008 R2 Express.
What's the difference between the SQL Server 2008 Express and SQL Server 2008 R2 Express versions?
How do I upgrade my SQL Server 2008 Express to SQL Server 2008 R2 Express?
Is it possible to attach a .mdf file created by SQL Server 2008 R2 Express to SQL Server 2008 Express?
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