Previous Topic: Example of Schema DefinitionNext Topic: Record and Set Representations

CA IDMS/DB Schema and VSAM File Correspondences › Entry-Sequenced Data Set

Entry-Sequenced Data Set

In VSAM, an entry-sequenced data set (ESDS) contains records that are physically stored in the order in which they are entered. ESDS records can be deleted logically, but not physically; they can be updated only if the length of the record is not changed.