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Introduction to Database System

Introduction to Database System
Structured Query Language (SQL) is an internationally recognized standard language that is understood by all commercial database management system products.

True
False

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Introduction to Database System
Which of the following is a serious problem of file management systems?

All of these
lack of data independence
difficult to update
program dependence
data redundancy

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Introduction to Database System
Batch processing is appropriate if

only a few transactions are involved
None of these
a large computer system is available
only a small computer system is available
All of these

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Introduction to Database System
Embedded pointer provide

None of these
All of these
a physical record key
a secondary access path
an inverted index

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Introduction to Database System
In SQL, the CREATE VIEW command is used

to recompile a table
to define a view of one or more tables or views
to recompile view
to create a trigger

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Introduction to Database System
In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?

One-to-One Relationship
Many-to-Many Relationship
Composite Relationship
One-to-Many Relationship

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