How to set username and password from database in Ranorex?

I'm new in Test automation and would like to start with Ranorex.

I am willing to make iOS/Android App test automation. In App We have login-view, so that user has to input username and password to log in into the app. The question is, how to get "username" and "password" from SQL Database while test automation? or is it a good idea to get data from database? or simply add variables without getting from DB?

I want to make two different case: 1. VALID-LOGIN-data and 2. INVALID-LOGIN-data.