'Define cluster' presentation slideshows

FILE ORGANIZATIONS

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JCL DAY 4

JCL DAY 4. VSAM DATASETS (virtual storage access method). These are the logical dataset for storing records and are known as clusters . The term cluster is used because there are two components for many VSAM datasets that are :. Index component - which contains the index.

619 views • 24 slides

VSAM ACCESS METHODS

VSAM ACCESS METHODS. Sequential Start at the beginning of the file and read the records in sequence by either a primary key or a foreign key (Alternate Index) Random Read a particular record from the file (usually by primary key) Dynamic

636 views • 14 slides