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Introduction to Database System

Introduction to Database System
Which of the following is a group of one or more attributes that uniquely identifies a row?

Tuple
Determinant
Key
Relation

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Introduction to Database System
A relation has cells that hold multi-value entries.

False
True

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Introduction to Database System
A computer file contains several records. What does each record contain?

Words
Fields
Bytes
Database

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Introduction to Database System
SQL stands for ________ .

Sequential Question Language
Structured Question Language
Sequential Query Language
Structured Query Language

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Introduction to Database System
In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction?

ZIP
COMMIT
SAVE
PACK

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Introduction to Database System
In SQL, which command is used to select only one copy of each set of duplicable rows

All of these
None of these
SELECT UNIQUE
SELECT DISTINCT
SELECT DIFFERENT

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