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Setting Up the world Database
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Setting Up the world Database

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The sample data used in the world database is Copyright Statistics Finland, http://www.stat.fi/worldinfigures.

To enable MYSQL users to perform manipulation of this data set using MySQL, the data set is available as a set of three tables:

  • Country: Information about countries of the world.

  • City: Information about some of the cities in those countries.

  • CountryLanguage: Languages spoken in each country.

Setup files to create the world database are available for the MyISAM or InnoDB storage engine:

  • world.sql contains SQL statements to create the database using MyISAM tables.

  • world_innodb.sql is similar but creates InnoDB tables. The columns are the same as those in the MyISAM tables, but the InnoDB tables also implement foreign key relationships between tables.

Each file is available for download at http://dev.mysql.com/doc/index-other.html.

The following instructions refer to the world.sql file, which contains CREATE TABLE statements for MyISAM tables. To create InnoDB tables instead, substitute the world_innodb.sql file in the instructions wherever you see world.sql.

To create the world database, load the contents of the world.sql file into MySQL using the following procedure:

  1. Change directory to where the world.sql file is located

    If your current directory is not the same as the location of the world.sql file, use a cd command to change location.

  2. Connect to the MySQL server using the mysql program

    At your command-line prompt, issue this command: 

    shell> mysql -u root -p

    This command connects to the server using the MySQL root account to make sure that you'll have permission to create the world database. The --p option tells mysql to prompt you for the root password. Enter the password when prompted. (Remember that the MySQL root account is not the same as the operating system root account and probably will have a different password.)

  3. Create the world database and select it as the default database:

    In the mysql program, issue the following statements: 

    mysql> CREATE DATABASE world;
mysql> USE world;

  4. Load the contents of world.sql into the world database

    Issue a SOURCE command to tell mysql to read and process the contents of world.sql: 

    mysql> SOURCE world.sql;

    You'll see quite a bit of output as mysql reads queries from the world.sql file and executes them.

After mysql finishes processing the world.sql file, try this statement: 

mysql> SHOW TABLES;
+-----------------+
| Tables_in_world |
+-----------------+
| City            |
| Country         |
| CountryLanguage |
+-----------------+

The output should list all three of the tables shown. Depending on your server configuration, SHOW TABLES may display the table names in lowercase. If so, use lowercase names whenever you refer to the tables by name later.

To see the structure of each table, use SHOW CREATE TABLE. For example: 

mysql> SHOW CREATE TABLE Country;
mysql> SHOW CREATE TABLE City;
mysql> SHOW CREATE TABLE CountryLanguage;
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