ALTER TABLE Statement: “ALTER TABLE” statement comes under Data Definition Language. It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on. Syntax: The Syntax to drop constraint is as follows: ALTER TABLE table_Name ADD CONSTRAINT constraintName;

Question

In the NONCAT table, increase the length of the DESCRIPTION column to 40 characters.

Answer 1

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Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

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Answer 2

Question

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

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Answer 3

Question

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

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Answer 4

Question

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

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Answer 5

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

Answer 6

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

Answer 7

Chapter 6, Problem 9TD

Program Plan Intro

ALTER TABLE Statement:

“ALTER TABLE” statement comes under Data Definition Language.

It is used to modify column, add constraints, add column(s), drop column, rename column name and table name, drop constraints, and so on.

Syntax:

The Syntax to drop constraint is as follows:

ALTER TABLE table_Name ADD CONSTRAINT constraintName;

Answer 8

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Ch. 6 - Prob. 1RQ Ch. 6 - Which command and clause adds an individual row to...Ch. 6 - How do you add data from an existing table to...Ch. 6 - Prob. 4RQ Ch. 6 - Which command removes rows from a table?Ch. 6 - Which command makes updates permanent?Ch. 6 - Which command reverses updates? Which updates are...Ch. 6 - Prob. 8RQ Ch. 6 - What is the format of the SET clause that changes...Ch. 6 - Which command and clause adds a column to an...

Solution Summary: The author explains how the ALTER TABLE statement is used to modify column length, add constraints, drop column, rename column name and table name, and drop constraints.

Concept explainers

Chapter 6 Solutions