Relational Database Week 09

Relational Database Week 09

12th Grade

9 Qs

quiz-placeholder

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Relational Database Week 09

Relational Database Week 09

Assessment

Quiz

Computers

12th Grade

Practice Problem

Medium

Created by

Lyle Wood

Used 9+ times

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the main function of a foreign key in a database?

To store large amounts of data

To link tables together

To create user interfaces

To encrypt data

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a primary key in a database?

A set of one or more columns that makes each row unique

A column that stores encrypted data

A column that allows duplicate values

A set of columns that increases data redundancy

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What do arrows in a one-to-many relationship indicate?

A single connection

Multiple connections

No connection

A circular connection

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the purpose of having a composite primary key in a junction table?

To ensure each record is unique without adding a third ID column.

To allow duplicate records in the table.

To simplify the table structure by removing foreign keys.

To increase the number of columns in the table.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does the term "composite primary key" refer to?

A primary key made up of multiple columns

A single unique column

A CSV file used to populate tables

A script for creating and inserting data

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a surrogate primary key?

A natural key used in the external world.

A primary key that is a combination of multiple columns.

An auto-incrementing number with no real significance.

A key that is dependent on other columns.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the additional requirement for a table to be in Third Normal Form (3NF) beyond meeting the criteria for 2NF?

All non-key attributes must be independent of other non-key attributes

The table must not have any foreign keys

All non-key attributes must depend on at least one part of the primary key

The table must have a composite primary key

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