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Aggregate functions
Example: Find the total number of employees.
SELECT COUNT (*) FROM EMP;
Example: //Find the minimum, maximum and average salaries of employees of department D1//.
SELECT MIN(SAL), MAX (SAL), AVG(SAL) FROM EMP
WHERE DEPTNO = 'D1' ;
Advantages and disadvantages of icloud based storage
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
courier company er-diagram
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
external view of DBMS in healthcare department?
what are the topics in data management
the of super market system done in database
Failures and Recovery In practice various things might occur to prevent a transaction from completing. Recovery methods are used to bring database, which does not satisfy consi
Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
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