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Relational Algebra is a set of basic operations used to influence the data in relational model. These operations allow the user to specify basic retrieval request. The result of re
Let consider the given partial relation EMP. Let us make some sub-queries for them EMPNO ENAME JOB SAL DEPTNO 7566
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
wrie a report on whether a BSc n information systems develops the skills required by employers in Database administration
what is binary relationship
Using a database design approach of your choice, produce a logical design for Pharma. 1) Your answer must consist of ONE the following: An entity-relationship (ER) diagra
What is relationship instance ? Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
why shadow copy technique is used?
Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to
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