Does SQL Server have an equivalent to Oracle's PL/SQL Package?

I was wondering if SQL Ser开发者_如何学Cver has an equivalent to Oracle PL/SQL Package? It is really nice to build your sprocs, functions, etc into a Package.

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Don't know if is a pure T-SQL equivalent, but you can Create all your procedures, functions into an .NET Assembly and the use it in SQL Server 2005 and higher.

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