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Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following set of functional dependencies:
{Faculty → Dean, Dean → Faculty, Department → Chair, Professor →Rank Chair, Department → Faculty, Student → DepartmentFacultyDean,
ProfessorRank → DepartmentFaculty}
Is the decomposition non-loss and dependency preserving?
Explain the Weak Entity Set An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in
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What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
i want to database for online assignment submission system
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
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