ISAM

ISAM – Indexed Sequential Access Method – is a method for indexing data for fast retrieval. It may be used from FORTRAN and PLANC. As for COBOL, ISAM is available in an upgraded version of COBOL's indexed organized I/O system.

Records may be retrieved by the aid of an index, or in sequential order. ISAM is call-oriented, which means that ISAM services are performed by calling routines from the ISAM library.

The ISAM file is located on two SINTRAN files, the index part on one file, the data part on another.

References: ND-10073-A1-EN