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Introduction to Database System

Introduction to Database System
An entity is something that can be identified in the user's work environment; something that the users want to track.

True
False

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Introduction to Database System
A scheme describes

None of these
All of these
records and files
data elements
record relationships

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Introduction to Database System
An entity class is a collection of entities and is described by the structure of the entities in that class.

True
False

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Introduction to Database System
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.

False
True

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Introduction to Database System
In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.

child
instance
parent
subtype

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Introduction to Database System
A set of programs that handle a firm's data base responsibilities is called a

Data Management System (DMS)
All of these
Data Base Processing System (DBPS)
Data Base Management System (DBMS)
None of these

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