In a CREATE TABLE command address each of the following: (a) Explain what the NOT NULL specification for a column means and when you might apply this specification. (b) Explain what the UNIQUE specification for a column means and when you might want to apply this specification. (c) Explain what the DEFAULT specification means and when you might want to apply this specification.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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TCOs 4, 5) In a CREATE TABLE command address each of the following:
(a) Explain what the NOT NULL specification for a column means and when you might apply this specification.
(b) Explain what the UNIQUE specification for a column means and when you might want to apply this specification.
(c) Explain what the DEFAULT specification means and when you might want to apply this specification.

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(a) Explain what the NOT NULL specification for a column means and when you might apply this specification.

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b) Explain what the UNIQUE specification for a column means and when you might want to apply this specification.

Computer Science homework question answer, step 2, image 1

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