SECURITY this gives FRED access GRANT EXECUTE ON SomeCommonTypes TO FRED GO Permissions, Visibility, UDTs, and User-Defined Aggregates A user-defined type must be defined in the SQL Server catalog to be visible to SQL Server stored procedures and other T-SQL procedural code, just as an assembly is. Once a UDT is defined in the SQL Server catalog, users need the appropriate permission to invoke it, just as they do for any other database object. Classes in an assembly are not directly accessible to T-SQL but may be used by other assemblies if they are public. For example, a CLR-based user-defined function may want to make use of a class from an assembly other than the one in which it is defined. This will only be allowed if the identity used to access the user-defined function, or other CLR-based procedural code, has EXECUTErights to that assembly. A UDT that is cataloged to SQL Server with CREATE TYPE is secured through permissions like any other SQL Server object. As with assemblies, you can grant REFERENCES and EXECUTE permissions on a UDT; with a UDT, however, the meaning is slightly different. Schema-bound links, in the context of a UDT, consist of: Creating a table with the UDT as a column Defining a stored procedure, UDF, or trigger on the static method of a UDT Defining a view using the WITH SCHEMABINDINGoption that references the UDT EXECUTE permission on a UDT is defined at the class level, not at the method level. Granting EXECUTE permission on a UDT does not automatically grant permission on every stored procedure or user-defined function in the UDT. This must be granted by granting permission to the stored procedure or UDF SQL Server object directly. EXECUTE permission is also required to fetch a UDT or execute its methods from code inside the SqlServerdata provider. User-defined aggregates follow the same rules. A schema-bound link to a user-defined aggregate would consist of:

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