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Example: Search the name, department number and salary of employees drawing minimum salary in that department.
SELECT ENAME, SAL, DEPTNO
FROM EMP
WHERE SAL IN (SELECT MIN (SAL)
GROUP BY DEPTNO);
EMPNO
ENAME
JOB
SAL
DEPTNO
7566
Nirmal
MANAGER
2975
10
7788
Kailash
ANALYST
3000
7839
Karuna
PRESIDENT
5000
20
7902
Ashwin
7905
Ashwini
4000
OUTPUT:
Search the salary of employees employed as an ANALYST
SELECT SAL FROM EMPWHERE JOB= ' ANALYST '
Explain the steps for reduction of E-R model into relational model. Ans:(a) Entity set in E-R model will be considered as table name in relational Model. (b) Attributes of e
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Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
what is entity in database system?
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
Q. With the help of a suitable diagram gives module wise explanation of system architecture of DBMS. Sol. A Database management is a collection of interrelated data and col
Relations create the database. They must satisfy various properties, like no duplicate tuples, no ordering of tuples, and atomic attributes, etc. Relations that satisfy these basic
Sub query in the UPDATE command : Example : //Double the commission for employees, who have got at least 2 increments. UPDATE EMP SET COMM = COMM * 2 WHERE
definition and its work
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