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4.2.02. Guarenteeing serializability

  • Two phase locking protocol (2PL)
    • Growing/expanding
      • Acquisition of all locks
      • Or upgrading of existing locks
    • Shrinking
      • Release of locks
      • Or downgrading
    • Guarentees serializability
      • equivalency without checking schedules
    ‹ 4.2.01. Introductionup4.2.03. A typical transaction pair ›
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