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Views in relational algebra: 1. Basic expression contains either a) A relation in the database. b) A constant relation. 2. General expressions are madde out of sma
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
These are interactive interfaces, graphical that hide the difficulty of the DBMS and query language behind an intuitive, simple to understand, and convenient interface. This permit
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
what is Nested relational model? Explain with examples.
What is Relational Algebra? Relational algebra is a Procedural query Language?
What is Enterprise Resource Planning (ERP), and what kind of a database is used in an ERP application? Enterprise Resource Planning (ERP) is an information system used in manuf
What are ways of finding out either an update is required or not for derived attributes? The ways to find out an update is required or, not are as: Explicit update
real life situations where database management system are most suitable
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