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The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Update Anomaly : This anomaly is occurred due to data redundancy. Redundant information makes updates more complex since, for example, varying the name of the instructor of MCS-014
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
Benefits of using heuristics
Question 1 Explain the concept of database recovery management. Explain the different levels of backup used for recovering data Question 2 What are the different types of par
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
what are information system hirarchy?
What is meant by software and hardware RAID systems? RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are
Give the forms of triggers? The triggering event can be insert or delete. For updated the trigger can state columns. The referencing old row as clause The referencing
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