Usage

Input Preparation

Parameters for the user-supplied input to the file management table are taken from two sources:

The table below presents the correspondences between VSAM data set definitions and FMT compiler statements.

Data set attribute	VSAM data set definition	FMT compiler statement
KSDS	DEFINE CLUSTER INDEXED (IXD)	FILE TYPE IS KSDS
ESDS	DEFINE CLUSTER NONINDEXED (NIXD)	FILE TYPE IS ESDS
RRDS	DEFINE CLUSTER NUMBERED (NUMD)	FILE TYPE IS RRDS.
PATH	DEFINE PATH PATHENTRY (alternate index or base cluster)	FILE TYPE IS PATH
Key length	DEFINE CLUSTER KEYS (length, displacement)	KEY LEN IS length
Key position	DEFINE CLUSTER KEYS (length, displacement)	KEY POS IS displacement
Buffer space	DEFINE CLUSTER BUFSPC (size)	BUFFERSPACE IS size
Record size (fixed-length record)	DEFINE CLUSTER RECSZ (min length, max length)	VSAM REC LEN IS max length
Record size (variable-length record)	DEFINE CLUSTER RECSZ (min length, max-length)	VSAM REC LEN IS VAR UP TO MAX max-length
Relative-record -number position	Not defined	REL REC NUM POS IS position
Reusable file	REUSE	FILE IS REUSABLE
Nonreusable file	NOREUSE	FILE IS NOT REUSABLE

The following table provides the correspondences between CA IDMS/DB schema definitions and FMT compiler statements.

Attribute	CA IDMS/DB schema definition	Sample FMT statement
Record name	ADD RECORD NAME IS DEPARTMENT.	REC IS DEPARTMENT.
Set name	ADD SET NAME IS DEPARTMENT-NDX	SET IS DEPARTMENT-NDX