Deprecated - Database compatibility

I'm currently looking into the feasibility of using Drupal as a CMS for a website based around searching a separate mySQL directory. This directory is currently in development and I was hoping to avoid writing stand alone html/php templates to make search requests to the DB.

I have read that you can quite easily have Drupal connect to more than 1 mySQL DB. But once connected can I integrate existing Drupal modules to work with this DB.

For example, can the searching module search my own separate mySQL DB as well?

Hi people,
I'm trying to understand the relationship between drupal and its database (I use mySql).
I have tried to find some documents in the Handbooks section and read some questions in
the forum but I failed (some links are denied)
I would like to know how drupal updates the tables of the schema when the administer makes some operations; and also it 's important to know the description of the drupal_db table.

Can somebody help me showing the link of some interesting article?

regards
thanks

Hi,
I want to know how clustering of MySQL can be done in drupal. Could any one please help me out with this. Any help will be greatly
appreciated.

Thanks and Regards
DrupalDev2007

Sorry if I placed this question in the wrong place (possible at the wrong time ^_^)

I am new to Drupal and have been looking around to fulfill this requirement I have for my current website project.

Hi,

I have one listbox. I need to retrieve the data's from Postgre SQL and display this data's in this listbox.

I made the following changes in settings.php file

$db_url['default'] = 'mysql://USER NAME:PASSWORD@localhost/DATABASE-NAME';
$db_url['pgsql'] = 'pgsql://USER NAME:PASSWORD@localhost/DATABASE_NAME';

And on that listbox i have given the following PHP code for retrieve data's from Postgre SQL.

db_set_active('pgsql');
$rs=db_query("SELECT QUERY");

i had put this issue, but none had answer me yet
http://drupal.org/node/195024

the site is going well, but when i want to try the phpbb2drupal module this phrase appear

The database type is unsupported. Please use either mysql for MySQL 3.x & 4.0.x databases, mysqli for MySQL 4.1.x+ databases, or pgsql for PostgreSQL databases. The database information is in your settings.php file.