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Introduction to Database System

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
In an enterprise-class database system, business users interact directly with database applications, which directly access the database data.

True
False

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Introduction to Database System
In SQL, which command is used to changes data in a table?

INSERT
UPDATE
BROWSE
APPEND

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Introduction to Database System
An indexing operation

establishes an index for a file
sorts file using two keys
sorts a file using a single key
None of the listed here

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Introduction to Database System
Given the functional dependency R → (S,T) , then it is also true that R → S.

True
False

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Introduction to Database System
Updating a database means

all of the listed here
revising the file structure
reorganizing the database
modifying or adding record occurrences

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