Let's understand Mainframe
Home Tutorials Interview Q&A Quiz Mainframe Memes Contact us About us

Module 2: VSAM Concepts

Data set organization techniques

VSAM arranges records by index key, relative record number, or relative byte address. It is used for direct or sequential processing of fixed-length and variable length records on DASD.

VSAM supports four types of data set organization techniques:-

  • KSDS – Key Sequenced Data Sets
  • ESDS – Entry Sequenced Data Sets
  • RRDS – Relative Record Data Sets
  • LDS – Linear Data Sets

Each of them are covered in detail in upcoming articles

© copyright mainframebug.com
Privacy Policy