The dclgen utility (declaration generator utility) is a structure‑generating utility that maps the columns of a database table into a structure that can be included in a variable declaration.

The dclgen utility can be invoked from the operating system level by executing the following command:

This command creates the declaration file, filename, containing a structure corresponding to the database table. The file also includes a DECLARE TABLE statement that serves as a comment and identifies the database table and columns from which the structure was generated. Once the file has been generated, use an embedded SQL INCLUDE statement to incorporate it into the variable declaration section. For more information, see DECLARE TABLE.