Additional storage and memory space are not required to store timestamp values.
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Q1: In two-phase locking,the second phase is the
Q3: In a PC-based DBMS,as long as one
Q4: The successful completion of a transaction is
Q5: In some database systems,such as Microsoft Access,users
Q7: Smart cards have built-in circuits containing processing
Q8: When the DBMS locks more rows and
Q9: A DBMS must provide ways to ensure
Q10: _ denies access by other users to
Q11: The more important it is to avoid
Q12: The DBMS must successfully complete all transaction
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