A brief description of a VSAM file and a presentation of the advantages of using VSAM.
II.Types of data sets
A discussion of the characteristics of key-sequenced, entry-sequenced and relative record data sets. The definition of control intervals and control areas; a description of the characteristics and structure of indexes and an explanation of control interval and control area splits.
A discussion of the purpose for alternate indexes; an explanation of alternate index records; and a presentation on the maintenance of alternate indexes.
A description of the characteristics of a VSAM catalog; an explanation of the information contained in a VSAM catalog; and a discussion of the purpose of user catalogs.
A brief description of the purpose of IDCAMS; an explanation of the syntax requirements for the DEFINE, REPRO, PRINT, LISTCAT, EXPORT, IMPORT, and DELETE commands.
VI.Coding in COBOL
A presentation of the VSAM syntax requirements for the SELECT, FD, OPEN, CLOSE, READ, WRITE, REWRITE, and DELETE statements; and a description of the STATUS KEY indicators.
VII.Coding in ALC
An explanation of the ACB, EXLST, RPL, MODCB, SHOWCB, and TESTCB macros; an explanation of I/O feedback; and a discussion on the use of OPEN, CLOSE, GET, PUT and ERASE macros.
VIII.Coding in PL/I
A presentation of the VSAM syntax requirements for FILE DECLARATIONS, the
TRANSMISSION STATEMENTS READ, WRITE, REWRITE, and DELETE; and a description of some sample ON CONDITIONS.