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MCQ

A computer file can be best described as

a single data item

a general collection of data items

an orderly collection of data items

a random collection of data items

None of the above

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MCQ

The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types.

Database

Table

Flat file

Data structure

None of the above

Discussion

MCQ

A _____ means that one record in a particular record type may be related to more than one record of another record type.

One-to-one relationship

One-to-many relationship

Many-to-one relationship

Many-to many relationship

None of the above

Discussion

MCQ

An application where only one user accesses the database at a given time is an example of a(n) ________ .

single-user database application

multiuser database application

e-commerce database application

data mining database application

Discussion

MCQ

An-owner-member set in the CODASYL specifications may have

only one owner but many owner occurrences

only one member but many member occurrence

more than one member but only one occurrence per member

All of the above

None of the above

Discussion

MCQ

A race condition occurs when

Two concurrent activities interact to cause a processing error

two users of the DBMS are interacting with different files at the same time

both (a) and (b)

All of the above

None of the above

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