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DDM=

DDM=

Indicates the NATURAL Data Definition Module (DDM) name.

Optional statement

Applies to: access descriptor

Interacts with: NSS

Syntax
Details

Syntax

DDM= data-definition-module-name;

The DDM= statement specifies the NATURAL DDM. The name assigned to a NATURAL DDM references an ADABAS file and its data fields. Note that a DDM is often referred to as an ADABAS file, even though it is only a view of an actual ADABAS file.

The name for a NATURAL DDM can be a maximum of 32 characters. In a NATURAL DDM, data fields can be assigned a DDM external name of 3 to 32 characters. DDMs are stored in a system file that is simply another ADABAS file.

If you delete or rename a SAS/ACCESS descriptor file, you do not delete or rename the descriptor file's underlying ADABAS file or NATURAL DDM. However, changing your DDM can affect your descriptor files. See Effects of Changing an ADABAS File or NATURAL DDM on Descriptor Files for more information on how changing your DDM can affect your descriptor files.

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