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SELECT Statement
This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
Using Arithmetic operator
Example:
SELECT ENAME, SAL, SAL+300
FROM EMP;
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
What are the Objectives of object design After going through this unit, you could be able to: explain steps of object design; discuss algorithms that reduce costs;
To eliminate duplicate rows (distinct operator) Example: SELECT DISTINCT DEPTNO FROM EMP;
I need to Map an E-R diagram to a relational schema
Illustrate the term- Abstracting Out Common Behaviour Inheritance is not every time recognised during analysis phase of development, thus it is necessary to re-evaluate object
The File Based System File based systems are an early attempt to computerise the manual filing system. For example, a manual file can be set up to hold all the correspondence r
Regional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively. Additi
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
Problem: ‘Users and Information system specialists need to spend inordinate amounts of time locating and gathering data' (Watson and Hal, 1998) Recent developments in the ar
Write a query that display ename annual salary and comm from emp table
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