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information on what went wrong by looking at the MySQL error log By default, this file is called hostnameerr in Windows and UNIX, and is always located in the MySQL data/ directory Other common problems, such as a forgotten superuser password or incorrect path settings, can also be discovered and resolved via a close study of this error log
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Setting Up the Example Database
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The code listings in this book all make use of a sample database containing flight, route, and passenger information for a fictitious airline The following sections discuss how to re-create this sample database on your development system and take a closer look at the tables that make up this database
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Administration
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Re-creating the Example Database
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The SQL commands needed to re-create the example database can be found in a single file, available from this book s website, at wwwmysql-usagecom Once you ve downloaded this file, drop to your shell prompt, fire up the MySQL command-line client, and execute the following commands:
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prompt# mysql -u root -p Enter password: *** Welcome to the MySQL monitor Commands end with ; or \g Your MySQL connection id is 14 Server version: 5130-community MySQL Community Server (GPL) Type 'help;' or '\h' for help Type '\c' to clear the buffer mysql> CREATE DATABASE db1; Query OK, 1 row affected (000 sec) mysql> exit Bye prompt# mysql -u root -p -D db1 < db1sql Enter password: ***
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These commands will create a new, empty database and then read in the SQL commands from the source file to create the example database (see 12 for more information on these commands) You can verify that the database has been correctly created by issuing a few quick SELECT commands and checking the output, as shown:
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mysql> SHOW TABLES; +---------------+ | Tables_in_db1 | +---------------+ | aircraft | | aircrafttype | | airport | | class | | flight | | flightclass | | flightdep | | log | | pax | | route | | stats | +---------------+ 11 rows in set (002 sec)
Appendix:
Installing MySQL and the Sample Database
mysql> SELECT COUNT(*) FROM flightdep; +----------+ | COUNT(*) | +----------+ | 108 | +----------+ 1 row in set (009 sec)
Understanding the Example Database
It s worthwhile spending a few minutes to understand the structure of the example database Table A-1 provides a concise summary of the tables in this database, together with an explanation of what each table contains The relationships between these tables can be visually understood from the entityrelationship (E-R) diagram in Figure A-10
PART II
Table Name airport route flight flightdep aircraft aircrafttype class flightclass pax stats log
Description Master list of airports serviced by the airline For each airport, specifies information on the host country, number of runways, and number of terminals Master list of routes between airport pairs For each route, specifies flying time, distance, and route status (active or inactive) Master list of flight numbers servicing each route Departure schedule for each flight (weekday and time) Master list of aircraft used for each flight number For each aircraft, specifies aircraft registration number, type, and maintenance cycle Master list of aircraft types in use Master list of seating classes Master list of seating classes available on each flight For each class, specifies maximum number of available seats and base price per seat Master list of passengers on each flight Current inventory of seat availability and price per seat on each flight Activity log
TAble A-1 Tables in the Example Database
Part II:
Administration
Figure A-10 E-R diagram for the example database
Summary
As a popular open-source application, MySQL is available for a wide variety of platforms and architectures, in both binary and source forms This chapter explained the differences between the different versions of MySQL and demonstrated the process of installing a binary version of MySQL on the two most common platforms, UNIX and Windows It also provided information on testing, securing, and automatically starting the MySQL server on both platforms For more detailed installation and troubleshooting information, consider visiting the following links: General installation notes, at http://devmysqlcom/doc/refman/51/en/ general-installation-issueshtml MySQL installation from binary tarballs on UNIX/Linux, at http://devmysql com/doc/refman/51/en/installing-binaryhtml MySQL installation from RPM packages on UNIX/Linux, at http://devmysql com/doc/refman/51/en/linux-rpmhtml MySQL installation on Windows, at http://devmysqlcom/doc/refman/51/ en/windows-installationhtml
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