====== setPrefix ======
~~NOTOC~~
<WRAP right box>
== Syntax ==

  boolean setPrefix (
    string $prefix = ''
    optional bool $addUnderscore=true
    )
</WRAP>
===== Description =====
Sets a prefix for database objects

Call this method to set a standard prefix that will be prepended to **all database tables and indexes**. 

If the optional ''$addUnderscore'' parameter is set, an underscore is automatically appended to the prefix.

===== Usage =====
<code php>
/*
* Assuming xml schema contains tables a,b,c
*/
$axmls->setPrefix('test');

/*
* tables will be created as 'test_a','test_b','test_c'
*/

$axmls->setPrefix('test',false);

/*
* tables will be created as 'testa','testb','testc'
*/
</code>

===== Note =====
Some database restrict the length of table and index names. Ensure that the total length of prefix + table name does not exceed that limit.