When you read from or update a database,you create a transaction.
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Q3: The multiuser DBMS must implement controls to
Q3: Incomplete or improper transactions can have a
Q5: A shared lock produces no conflict as
Q10: The optimistic approach is based on the
Q14: Atomicity indicates the permanence of the database's
Q14: To ensure consistency of the database, every
Q17: Most real-world database transactions are formed by
Q18: In a page-level lock, the DBMS will
Q20: A growing phase in a two-phase lock
Q20: When using an optimistic approach,a transaction reads
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