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Explain Clustering file organization
(i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that field is known as the clustering field. The sort of index that is created using clustering field is known as clustering index. Clustering index is employed to speed up retrieval of records that have similar value for the clustering field.
The file which is organized based on the clustering field and clustering index is known clustering file organization.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
Explain briefly concurrent task by taking an example. Concurrent Task- The concurrent occurrence of more than one event is called concurrent task. Operating systems can handl
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Define Direct file organization? The direct file organization is employed to enhance the performance in accessing the records than sequential file organization. In direct file
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what is natural join?
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
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