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WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
Question A What is operational intelligence? Question B What is Business Intelligence? Explain the components of BI architecture Question C Differentiate between databas
draw ER diagram of student entity and course entity where attribute of student entity are student roll, student name, student phone and student address and attribute of course enti
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
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diagrams and meaning
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
A buyer for a large department store chain must place orders with an athletic shoe manufacturer six months prior to the time the shoes will be sold in the department stores. In par
Explain Data Sublangauges ? Data sublanguage: In relational database theory, the term sublanguage, first used for this purpose through E. F. Codd in the year of 1970, refers t
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