The process of implementing an external UDF requires the following steps:
After these steps are successfully completed, your UDF is ready for use in DML or DDL statements such as CREATE VIEW. The steps of writing and defining UDFs are discussed in the following sections, followed by a discussion on using UDFs. For information on compiling and linking UDFs, refer to the Application Building Guide. For information on debugging your UDF, see Debugging your UDF.