The database table prefix is a string (a few characters long) prepended to the name of Joomla!'s tables. Using a prefix enables you to run multiple installations of Joomla! using a single database.

The database table prefix can be set during installation. Changing it later is possible, but requires access to the database through a non-Joomla medium or a Joomla Extension such as Akeeba Admin Tools and will cause some downtime.

Extension developers need to use the string #__ to represent the prefix. This will be replaced by the real prefix during runtime by Joomla.

Reference: http://docs.joomla.org/Glossary

Dirección

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Sensei Javier Lozano

Presidente IKO Catalulnya
jlozano@ikocatalunya.com
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Shihan Chema Gómez

Seleccionador Competidores
cgomez@ikocatalunya.com
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Shihan Diego Torrente

Arbitraje
dtorrente@ikocatalunya.com
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Sensei David Lopera

Vicepresidente IKO Catalunya
dlopera@ikocatalunya.com