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Introduction to Database System

Introduction to Database System
The DBMS that is most difficult to use is ________ .

IBM's DB2
Oracle Corporation's Oracle
Microsoft's SQL Server
Microsoft's Access

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Introduction to Database System
1:1, 1:N and N:M relationships are also known as HAS-A relationships.

False
True

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Introduction to Database System
A tuple is a(n):

row of a table.
column of a table.
two dimensional table.
key of a table.

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Introduction to Database System
A _____ Contains fields of data about one entity.

Record
File
None of these
Fields
Document

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Introduction to Database System
A relation is in 5NF when multivalued dependencies are isolated in their own relation.

True
False

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Introduction to Database System
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

ID- independent entity
ID-dependent entity
Strong entity
Weak entity

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