Pattern or strategy to implement scalable architecture

I have an idea to develop my android app and i need to find right way to do it. I have a lack knowledge about patterns, so i would like to get(please, please, please) some advice how to implement right pattern or any architecture implementations for my SQLite database and requests for it.

My basic ideas are to have SQLiteOpenHelper with minimum code which creates database and invoke method from different classes(maybe stored in other basic class) which creates tables. Invoke methods from different table classes which not use SQLiteOpenHelper;