How to create a billing database in sqlite android?

I am going to create an SQLite bill database with a customer's purchase details. I have 5 columns, BillNo, Date, Customer, ItemNo, Count. If this customer has purchased multiple items with different count how can I add it to the bill database? I am beginner in database creation. I have a starting trouble how to start the database. Anyone please suggest some examples or database creation code for this structure to start this app..