Explain about the file objects in VSAM

Sharad Jaiswal
Sharad Jaiswal

Posted On: Feb 22, 2018

 

Every file in VSAM has two objects which define this storage system.

  • File object - File object represents the entire file itself. You can use the method like Delete, Read, Rewrite, Write, Unlock, StartBr and perform those actions.
  • FileBrowse object - This represents the browse operations in a file. The methods used in this are Enable, ReadNext, ResetBr, ReadPrv and perform these activities on IDCAMS ( Integrated Data Cluster Access Method Services) or TSO prompt.
  • The IDCAMS is a utility that is used to create, modify or delete the datasets in VSAM. This is an Access Method Service(AMS). It is capable of handling both VSAM and non-VSAM datasets.

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