Chapter 5 Building Triggers and Procedures
You can create user-defined error messages. The error messages are stored in a message table which you need to create in your database. When you select trigger generation parameters, you can choose to generate an error message from this table.
In the generated trigger script, the message table is called in a SELECT command. If an error number in the script corresponds to an error number value in the table column, then the standard error message is replaced by the message defined in the table.
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