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Mainframe Programming: COBOL, REXX, TSO, INSYNC, and DB2
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What is a lock in DB2?
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A
A lock is the mechanism that controls access to data pages and table spaces.
💡 Explanation:
DB2 locks control access to physical and logical data resources like table spaces, tables, and data pages to ensure concurrency. They do not lock individual columns (making the first option incorrect) or views directly (making the second option incorrect), making the third option the most accurate.