Microsoft has made significant enhancements to SQL Server with the version 7.0 release. Although Microsoft virtually redesigned SQL Server, it maintained compatibility with SQL Server 6.x in most cases from an administrative standpoint. On the downside, when you upgrade from SQL Server 6.5 you must upgrade your database files, for two reasons. First, the database files that you're using with version 6.5 are not compatible with the 7.0 engine. Second, the files that currently represent your device files have been dropped.
Databases now have their own associated files on disk.
This has significant advantage for managing the server. We sell SQL Server services as an addon to a Developer NT Web Hosting Account.