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Mohamad Eskandarane Questions
11022 Questions
Constraint checking can be disabled in existing _______________ and _____________ constraints so that any data you modify or add to the table is not checked against the constraint
Database
2022-07-19
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30
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1518
Isolation of the transactions is ensured by
Database
2022-07-19
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30
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1553
SNAPSHOT is used for (DBA)
Database
2022-07-19
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30
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1635
Which of the following is not a property of transactions
Database
2022-07-19
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30
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1652
What would be the outcome of the below query?
Database
2022-07-19
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30
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789
Evaluate the following SQL statements in the given order
Database
2022-07-19
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746
A non-correlated subquery can be defined as ______
Database
2022-07-19
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645
Which statement is true regarding external tables
Database
2022-07-19
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30
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700
In which scenario would you use the ROLLUP operator for expression or columns within a GROUP BY clause?
Database
2022-07-19
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30
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704
EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work in relation to the EMPDET table?
Database
2022-07-19
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30
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630
__________ are used to ensure that transactions access each data item in order of the transactions’ ____ if their accesses conflict
Database
2022-07-19
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30
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1100
A concurrency-control policy such as this one leads to ______ performance, since it forces transactions to wait for preceding transactions to finish before they can start
Database
2022-07-19
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30
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581
In concurrency control policy the the lock is obtained on
Database
2022-07-19
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30
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639
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