A Guide to SQL
A Guide to SQL
9th Edition
ISBN: 9781337668880
Author: Pratt
Publisher: Cengage
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Chapter 6, Problem 1TD
Program Plan Intro

Primary key:

  • To identify each record in a table, at least there must be one data field, which should be unique.
    • That is corresponding data field of every record should be unique.
    • It is called primary key.
  • Primary key is used to identify the unique record from a collection of records.

Table Creation:

Creating table comes under Data Definition Language (DDL).

  • The CREATE command is employed for establishing databases on our platform by constructing tables in an already existing database.

The Syntax for creating table is as follows:

CREATE TABLE TABLE_NAME (

  Column1 datatype,

  Column2 datatype,

  …

);

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