Using Earlier Versions of Analysis Services
You can create objects supported by previous versions of Microsoft® SQL Server™ 2000 Analysis Services. Decision Support Objects (DSO) can read and process objects created in previous versions of Analysis Services that support such objects. In particular, the creation of virtual dimensions is now supported in a more efficient fashion; although code written for SQL Server 7.0 OLAP Services to create virtual dimensions will continue to function, the more efficient process of virtual dimension creation supported in SQL Server 2000 Analysis Services is recommended.