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What is a hash index?
A hash index organizes the search keys, with their associated pointers, into a hash file structure.
what are the type of the database
#what is cursor its uses ? Explain it
i want notes on this topic
Whta is the advantage of the database management approach? The advantage of the database management approach is data is integrated and can be accessed by multiple programs.
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
Define the step - Rearranging the Execution Order for Efficiency As we know that algorithm and data structure are closely related to one another, but data structure is conside
Improved performance: As the data is located near the site of its demand, and given the inherent parallelism because of multiple copies, speed of database access may be good for di
To eliminate duplicate rows (distinct operator) Example: SELECT DISTINCT DEPTNO FROM EMP;
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
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