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Common Language Runtime (CLR) Integration (SQL Server)Locate this document in the navigation structure

CLR integration (for SQL Server 2005 and higher) means that stored procedures, triggers, and user-defined types, functions, and aggregate functions can be written for SQL Server in any .NET language, such as VB .NET or C#.

PowerDesigner supports CLR integration with assemblies, aggregate functions, CLR types, procedures, functions, and triggers.


In this section:
    CLR Assemblies (SQL Server)
    An assembly is a DLL file used to deploy functions, stored procedures, triggers, user-defined aggregates, and user-defined types that are written in one of the managed code languages hosted by the Microsoft .NET Framework common language runtime (CLR), instead of in Transact-SQL. PowerDesigner models assemblies as extended objects with a stereotype of <<Assembly>>.
    CLR Aggregate Functions (SQL Server)
    An aggregate function performs a calculation on a set of values and returns a single value. Traditionally, Microsoft SQL Server has supported only built-in aggregate functions, such as SUM or MAX, that operate on a set of input scalar values and generate a single aggregate value from that set. SQL Server integration with the Microsoft .NET Framework common language runtime (CLR) now allows developers to create custom aggregate functions in managed code, and to make these functions accessible to Transact-SQL or other managed code. PowerDesigner models aggregate functions as extended objects with a stereotype of <<Aggregate>>.
    CLR User-Defined Types (SQL Server)
    The introduction of user-defined types (UDTs) in SQL Server 2005 allows you to extend the scalar type system of the server, enabling storage of CLR objects in a SQL Server database. UDTs can contain multiple elements and can have behaviors, differentiating them from the traditional alias data types which consist of a single SQL Server system data type.
    CLR Procedures, Functions, and Triggers (SQL Server)
    In Microsoft SQL Server 2005, you can write user-defined procedures, functions, and triggers in any Microsoft .NET Framework programming language. PowerDesigner models these objects as standard procedures and triggers that use a CLR template, and are linked to a method from an associated OOM.