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Introduction to Database System

Introduction to Database System
A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file.

File structure
Database
Records
Fields

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Introduction to Database System
In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.

False
True

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Introduction to Database System
Which command is used to select distinct subject (SUB) from the table (BOOK)?

All of these
SELECT ALL FROM BOOK
None of these
SELECT DISTINCT SUB FROM BOOK
SELECT SUB FROM BOOK

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Introduction to Database System
Applications are programs that interact directly with the database.

True
False

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Introduction to Database System
A command that lets you change one or more fields in a record is

Modify
All of these
Insert
Look-up
None of these

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Introduction to Database System
Two files may be joined into a third file if

they have a field in common
None of these
they have no records with the same value in the common field
they have a row in common
both (b) and (c)

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