Deprecated - Database compatibility

i want to upgrade my website made in 4.7 to 5.1
so how can i upgrade the database of that website to 5.1 please help me

which drupal files are responsible for the database connectivity in drupal

I've tried to find a description of what tables (in MySQL) drupal create/use and what they contain but failed to find one. Does such a description exist, and if so where can I find it?

I was wondering if there is any quick way to obtain information from the optional registration field without having to code an entire PHP Application.

Hi,

I am using Drupal 4.7.3 with mysql 4. I am planning to use mysql 5 ..I am not sure if drupal 4.7.3 is compatible with mysql 5. Your reply will be of gr8 help!!!

Thanks in Advance

HI
Iam new to the php create one procedure that is worked in mysql prompt good ,but i call the same procedure with php code as
$result= mysql_query("call procname()");
print_r($result);

It doesnot dispalys the records in place of that an error comes like:

user error: PROCEDURE can't return a result set in the given context .

What can i do ? i want to dispaly the result set of that records.