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What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
Express the subsequent query in SQL assumes which the data is stored within EMPLOYEE table with relevant fields (i) Display name, job, salary, and hire date of employee who are
Create 1 experiment to demonstrate an aspect of query optimisation by using access-path structures (indexes), decomposition, or denormalisation. Once satisfied with your experiment
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Which two tools are used to administer users for Active Directory?
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
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What exactly is the concept of Functional Dependencies? And how do we associate this concept with the logic of Super-keys, Candidate Keys, etc? Given Relation R(A,B,C,D,E) with de
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