First of all User Defined Functions as specified within the Formulas properties of your app. Just like Named Formulas. In the above example we can see that the structure is fairly similar.

The classification function is a user-defined function (UDF) written in good ol’ Transact-SQL whose logic enables Resource Governor to classify sessions into the existing workload groups defined in ...

You can create custom Excel functions using VBA matching using your criteria. Create custom Excel functions using Macros in Excel & use user-defined functions in Excel.

However, the new attacks observed by Symantec abuse the user-defined function (UDF) capability of the MySQL database engine. UDF allows developers to extend the functionality of MySQL with ...