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Introduction to Database System

Introduction to Database System
The highest level in the hierarchy of data organization is called

data file
database
data record
data bank

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Introduction to Database System
In SQL, which of the following is not a data Manipulation Language Commands?

CREATE
DELETE
SELECT
UPDATE

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Introduction to Database System
A scheme describes

record relationships
None of these
All of these
records and files
data elements

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Introduction to Database System
In the relational model, relationships between relations or tables are created by using:

determinants.
foreign keys.
candidate keys.
composite keys.

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Introduction to Database System
Which of the following is not a relational database?

4th Dimension
dBASE IV
FoxPro
Reflex

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Introduction to Database System
A compound key

is made up a several pieces of information
both (a) and (b)
uniquely identifies an item in a list
None of these
is a combination of each unique key

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