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Introduction to Database System

Introduction to Database System
Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape.

False
True

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Introduction to Database System
In an Enterprise-class database system, business users interact directly with database applications that interact with the DBMS, which directly accesses the database data.

True
False

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Introduction to Database System
A _____ means that one record in a particular record type is related to only one record of another record type.

One-to-many relationship
One-to-one relationship
Many-to-one relationship
Many-to-many relationship
None of these

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

subtype
parent
child
instance

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Introduction to Database System
Which of the following is not true of the traditional approach to information processing?

All of these
It is inflexible
Programs are dependent on the files
It is file-oriented
There is common sharing of data among the various applications

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Introduction to Database System
In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction?

COMMIT
SAVE
PACK
ZIP

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