6.2.28.7.1 "COBOL Language Reference" IBM Library Server

6.2.28.7.1 Indexed Files

Execution of a Format 2 READ statement causes the value of the key of reference to be compared with the value of the corresponding key data item in the file records, until the first record having an equal value is found. The file position indicator is positioned to this record, which is then made available. If no record can be so identified, an INVALID KEY condition exists, and READ statement execution is unsuccessful. (See "INVALID KEY Condition" under "Common Processing Facilities" in topic 6.1.8.9.)

If the KEY phrase is not specified, the prime RECORD KEY becomes the key of reference for this request. When dynamic access is specified, the prime RECORD KEY is also used as the key of reference for subsequent executions of sequential READ statements, until a different key of reference is established.

When the KEY phrase is specified, data-name becomes the key of reference for this request. When dynamic access is specified, this key of reference is used for subsequent executions of sequential READ statements, until a different key of reference is established.

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6.2.28.7.1 Indexed Files

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