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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 retrieval is a new relation, produced from one or more relations. These operations can be divided in two categories:
• Basic Set Operations
1) UNION
2) SET DIFFERENCE
3) INTERSECTION
4) CARTESIAN PRODUCT
• Relational Operations
1) JOIN
2) PROJECT
3) SELECT
4) DIVISION
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Distributed Database Management System
Draw an ER diagram for company''s database schema
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What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
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