Q. A non-correlated subquery can be defined as ______

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Q. Which statement is true regarding external tables?

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Q. In which scenario would you use the ROLLUP operator for expression or columns within a GROUP BY clause?

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Q. EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work in relation to the EMPDET table?

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Q. __________ are used to ensure that transactions access each data item in order of the transactions’ ____ if their accesses conflict.

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Q. 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.

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Q. In concurrency control policy the the lock is obtained on

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Q. Which server can joins the indexes when only multiple indexes combined can cover the query:

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Q. Which are types of recovery control techniques:

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Q. How many types of recovery control techniques:

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Q. Copying files to secondary or specific devices is known as ______

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Q. Database security helps organizations to protect data from _____

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Q. Optimization basically related to the Rewrite module is termed as_______

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Q. Optimization that is basically related to the rewriter module is termed as__________

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Q. Which is duplication of computer operations and routine backups to combat any unforeseen problems:

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Q. Which is a duplicate copy of a file program that is stored on a different storage media than the original location:

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Q. Which is refers to a stalemate situation due to which no further progress is possible as computer await response of each other:

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Q. Which formal method that locates and analyses relation schemas on the basis of their primary, candidate keys, and the FD’s that are present among the attributes of these schemas:

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Q. Which is the process of breaking a relation into multiple relations:

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Q. E.F.Codd developed the normalization process in the which early:

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