Technical data

MODIFY

Function

The MODIFY statement changes the contents of speciﬁed data items in a

database record.

General Format

MODIFY

record-name

{ record-item } . . .

RETAINING

REALM

RECORD

SET [ set-name ] . . .

{ set-name } . . .

CURRENCY

ON ERROR stment

NOT ON ERROR stment2

END-MODIFY

record-name

names a subschema record type.

record-item

is a group or elementary data item in a subschema record type. Record-item can

be qualiﬁed.

set-name

names a subschema set type.

stment

is an imperative statement executed for an on error condition.

stment2

is an imperative statement executed for a not on error condition.

Syntax Rules

1. Each record-item must reference a data item in the same subschema record

type.

2. If record-item is a group item, its subordinate group and elementary data

items cannot be referenced as a record-item in the same MODIFY statement.

3. Use record-name to check that the current record of the run unit is a record

type identical to the record-name record type.

General Rules

1. Changes are made to a database record by:

• Locating the target record (FIND and GET, or FETCH)

• Moving the new data to the data-name references in the user work area

• Executing the MODIFY statement

Procedure Division 4–45