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Relational Databases: Multiple Choice Questions

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Relational Databases: Multiple Choice Questions
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46 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of indexes in relational databases?

Encrypt data

Speed up searches and provide order

Generate passwords

Create backups

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when a record is added or deleted?

Table structure changes

Indexes are updated automatically

All keys reset

Table is duplicated

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do keys and indexes help establish?

User accounts

Code formatting

Relationships between tables

Query length

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a data schema?

A) A group of related tables

B) A programming function

C) A single row

D) A type of key

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is metadata?

Information about tables, fields, keys, etc.

Data stored in XML

Only passwords

Video file attributes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must primary key values be?

Random and null

Unique and non-empty

Equal to each other

Set to zero

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of relationship links one record in one table to one record in another?

One-to-One

Many-to-Many

One-to-Many

Self-referencing

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