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What is the need for triggers?
Triggers are useful mechanisms for alerting humans or for starting particular tasks automatically when particular conditions are met.
DROP TABLE Command: When an existing object is not needed for further use, it is always better to eliminate it from the database. To remove the existing object from the databas
growing phase and shrinking phase are disjoint, why ?
Draw an entity relationship diagram (ERD) for the following situation: A company has a number of employees. Each employee is identified by an Employee_Id. The company wants to st
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
example of embedded SQL query
Distributed Database Management System
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Define Query by Example QBE is a query language relies upon domain calculus and has two dimensional syntax. The queries are written in the horizontal and vertical dimensions of
What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere
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