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GATE CSE & IT · Transactions · 2007-2007

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Korth — Database System Concepts

Relational model, SQL, normalization, transactions

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2007 PYQ

Consider the following two transactions: T 1 and T 2 . T 1 : read (A); T 2 : read (B); read (B); read (A); if A = 0 then B ← B + 1; if B ≠ 0 then A ← A - 1; write (B); write (A); W...

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