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what is Mapping Constraints? with examples
#question benefits and limitations of data models..
Differentiate between join and outer join? Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get toge
how to make an e r diagram?
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification: The practice emplo
What is Relational Algebra? Relational algebra is a Procedural query Language?
What is completeness constraint on generalization? Define the variation between total and partial design constraint. Give an example each. Ans: Completeness Constraints
(a) Explain briefly the three parts of a relational Model. (b) Contrast the following terms with an appropriate example: (i) stored attribute v/s derived attribute (ii) en
how design database from begining
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
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