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Define access time.
Access time is the time from when a read or write request is issued to when data transfer starts.
What is the meaning of Data Independence ?
Define the Immediate Update The immediate update methods may apply changes to the database on disk before the transaction arrives a successful conclusion. Though, these change
Problem: (a) Given the following relation: Stats(Name,Sex,Children, Occupation, Salary, Tax, Audits) Write SQL code to define the following security constraints: (i) User
By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
What is the use of group by clause? Group by clause is used to apply aggregate functions to a set of tuples. The attributes given in the group by clause are used to
give some example real-life situations where DBMS are most suiitabe
need a DBMS system on any data for assignment.
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