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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
What is called as recursive partitioning? The system repeats the splitting of the input unless each partition of the build input fits in the memory. Such partitioning is known
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Isolation or Independence : The isolation property shows that the updates of a transaction should not be visible till they are committed. Isolation assurance that the progresses of
For each m:n relationship type R, we make a new table (say S) to represent R. We also contain the primary key attributes of both the participating entity types as a foreign key att
Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.
i need to submit in this topic.
Some disadvantages of File Oriented System ?
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Define what Immediate database modification technique uses? Ans: Both undo and redo.
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