A data definition module (DDM) contains the description of a database file and the fields therein. Natural requires this description to access the data stored in the file from a Natural program.

For further information, see Data Definition Modules - DDMs and Natural and Database Access.

Related Topics:

• Accessing Data in an Adabas Database

• Accessing a DB2 Table in the Database Management System Interfaces documentation

• Accessing an SQL/DS Table

• Generating Natural Data Definition Modules (DDMs) - SQL Services - in the Database Management System Interfaces documentation

• Accessing DL/I Data and Generation of DDMs from DL/I Segment Types in the Database Management System Interfaces documentation

• Protecting DDMs On Mainframes in the Natural Security documentation