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Description of  Mainframe Virtual Storage Access Method [VSAM]

Published 4/2024 MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz, 2 Ch Language: English | Duration: 2h 36m | Size: 1.6 GB KSDS ESDS RRDS LDS PS What you'll learn What is VSAM? Differences between KSDS, ESDS,RRDS and PS How to create VSAM files using IDCAMS utility? IDCAMS utility commands: DEFINE, REPRO, PRINT, DELETE, LISTCAT Requirements TSO/ISPF Module JCL Description This course consist of What is VSAM? Cluster Definition Differences between VSAM and NON-VSAM datasets Differences between KSDS, ESDS, RRDS and LDS What is Control Interval (CI) and Control Area (CA) How to create KSDS, ESDS, RRDS files using IDCAMS utility Explained different IDCAMS utility commands DEFINE REPRO PRINT DELETE LISTCAT ALTER File Manager tool DITTO tool This course is totally practical oriented hence you will get almost all concepts explanation on Mainframe Shop. What is VSAM? The term Virtual Storage Access Method (VSAM) applies to both a data set type and the access method used to manage various user data types. Different type of VSAM datasets Key Sequence Data Set (KSDS) Entry Sequence Data Set (ESDS) This form of VSAM keeps records in sequential order. Records can be accessed sequentially. It is used by IMS, DB2, and z/OS UNIX. Relative Record Data Set (RRDS) This VSAM format allows retrieval of records by number record 1, record 2, and so forth. This provides random access and assumes the application program has a way to derive the desired record numbers. Linear Data Set (LDS) This type is, in effect, a byte-stream data set and is the only form of a byte-stream data set in traditional z/OS files (as opposed to z/OS UNIX files). DB2 and a number of z/OS system functions use this format heavily, but it is rarely used by application programs. Who this course is for