<database> (ISAM) An IBM file management system allowing records to be accessed either sequentially (in the order they were entered) or via an index. Each index orders the records on a different key.
ISAM was followed by VSAM (Virtual Storage Access Method) and pre-dated relational databases.
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Nearby terms: Independent Verification and Validation « index « Index Data « Indexed Sequential Access Method » index register » indices » indirect address