customer service, Database Management System

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as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen

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What is trigger, What is Trigger? Trigger: A database trigger is proced...

What is Trigger? Trigger: A database trigger is procedural code which is automatically executed in response to specific events on a particular table in a database. Triggers can

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Illustrate the statement 'Projection operation distributes over the union operation'. Give an example.    Ans: Π L (E 1 ∪ E 2 ) = (Π L (E 1 )) ∪ (Π L (E 2 ))   This says th

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What is a candidate key? Minimal super keys are known as candidate keys.

Dbms, statical data

statical data

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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

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What are the two types of indices? The two types of indices are:- A)     Dense index B)      Sparse index

Er model, explain the steps for reduction of er model into relational model...

explain the steps for reduction of er model into relational model?

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What is a Built-in A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in objec

Why does a dbms query language is designed, Why does a DBMS query language ...

Why does a DBMS query language is designed? A DBMS query language is designed to support end users who use English-like commands. support in the development of complex applicat

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