I want to put values from additional database in drupal 7. How can I do it? I wanted to include additional values to the drupal site. Since it has around 3000 records and it is divided into categories ( a:1, a:2, a:3, b:1, b:2, c:1, c:2, c:3), I had set additional database and connected to drupal.
My question is:
How can I get those values into drupal? views? They have to be included in two forms as a checkboxes and value lists on other form to choose.

Thank you.
This thread: https://drupal.stackexchange.com/questions/3275/how-do-i-display-an-external-database-data discusses this issue quite thoroughly.