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What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
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Explain the difference between using functions along with and without grouping attributes in relational algebra. Give examples. Ans: Group functions are used to group data of
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
What is conceptual model ? A conceptual model is a independent of both hardware and software.
One-to-many : An entity in A is related with any number of entities in B. An entity in B is related with at the most one entity in A. Example: Relationship between faculty and d
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
Question: This question refers to the database schema. a) Express the following queries in SQL: (i) Write the SQL code that will create the table Company. Your answer sh
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
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