Meta Data Services
Meta Data Services 3.0 is a component of Microsoft SQL Server 2000 that is no longer available in Microsoft SQL Server 2005. Upgrading does not delete the existing repository tables in the msdb database. However, the repository engine that reads and updates the tables is not available after you upgrade, and the repository tables are no longer accessible. To remove the unused tables, you can manually delete them. Repository tables can be identified by the Rtbl prefix.
Note
Before you delete the tables, be sure that they do not contain DTS packages or SSAS metadata that you want to keep.
See Also
Concepts
SQL Server 2005 and SQL Server 2000