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Sharing Knowledge on Mainframe Skills for Interview Preparation.
GDG --> Generation Data Group * Generation Data Groups (GDGs) are groups of datasets related to each other by a common name.* The common name is GDG...
In IBM Db2, RUNSTATS is a utility used to collect and update statistics about database tables, indexes, and columns. These statistics help the Db2...
Assume a Scenario: You have an alphanumeric field X(10) that holds numeric data (but as characters), and you need to convert it to a numeric field...
In COBOL, both subscript and index are used to access individual elements within tables (arrays). However, they have distinct characteristics and...
--> In Job Control Language (JCL) for mainframe systems, JCLLIB, JOBLIB, and STEPLIB are DD statements used to specify libraries where the system can...
