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Having Clause with sub queries: First we have to recollect the GROUP BYclause. The following query searches the minimum salary in every department.
SELECT DEPTNO, MIN (SAL)
FROM.EMP
GROUP BY DEPTNO;
Output:
DEPTNO
SAL
10
2975
20
3000
Problem: (a) Given the following relation: Stats(Name,Sex,Children, Occupation, Salary, Tax, Audits) Write SQL code to define the following security constraints: (i) User
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
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What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
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Explain about primary key Primary Key: It is one of the candidate keys that are taken to be the recognizing key for the entire table. E.g. although there are two candidate ke
Data slice explanation
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Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
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