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Introduction to Database System

Introduction to Database System
Data item characteristics that are important in data management include

spelling
punctuation
width
language

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Introduction to Database System
If attribute A determines both attributes B and C, then it is also true that:

A →
(B,C) →
B →
C →

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Introduction to Database System
A network schema

restricts the structure to a one-to-many relationship
All of the listed here
stores data in tables
permits many-to-many relation¬ships

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Introduction to Database System
An operation that will increase the length of a list is

Look-up
Insert
All of the listed here
Modify

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Introduction to Database System
A relation is in this form if it is in BCNF and has no multivalued dependencies:

domain/key normal form.
fourth normal form.
third normal form.
second normal form.

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Introduction to Database System
What name is given to the collection of facts, items of information or data which are related in some way?

Database
Information provider
Information tree
Directory information

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