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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' ;
Data Mining 1. What is data mining? Write Data Mining applications. 2. Explain OLAP? Write the benefits of OLAP. 3. What are the key features of a Data Warehouse? 4. W
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How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
example of embedded SQL query
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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
in an organization several projects are undertaken. Each project can employ one or more employees. Each employee can work on one or more projects. Each project is undertaken on the
how to submit answers softcopy
What is use of generating such tables? How can you create temporary tables? When you require a table only for a short time after that you want it to disappear automatically you
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