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Give the general form of SQL query?
Select A1, A2............., An
From R1, R2..............., Rm
Where P
job scheduling for different cubes
Differentiate strict two phase locking protocol and rigorous two phase locking protocol. In strict two phase locking protocol all exclusive mode locks taken by a transaction is
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
Q. Explain data aggregatio n and discuss different design constraints. Sol. Aggregation One limitation of the E-R model is that it cannot express relationships amon
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
What is MySQL? MySQL is a relational database management system which has eleven million installations. It can be used for both Linux and Window. Managing database includes add
What is a data dictionary? Data Dictionary is a main source of data in a data management system. Its major function is to carry the creation and management of data definition
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
please i request for your assistance in developing a case-based online phone repair
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
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