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How does the system cope up with a record crash when recovery is going on after the first crash?
Ans: In a system the undo and redo operations are needed to be idempotent to cope up with a record crash while recovery is going on after the crash. Because of the idempotent property, recovery process, whereas in the process of undoing or redoing the actions of a transaction, may fail without a trace, and this kind of failure can take place any number of times before the recovery is done successfully.
What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
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In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
List two restrictions that are applied on the modification (updation, insertion or deletion) of base tables through view. Ans: The two restrictions are: 1. If a view
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
Three way to handle missing field val
What are the drawbacks of File Oriented System in details?
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