Question

I’m creating a game where I’m saving the in-app purchase history in a database. I’m designing the database and I need to know if the transaction_id returned from the receipt verification from Apple servers is always a number that fits in 64-bits. It seems so, but I just need to be sure. Did anyone see anything else? If it is always a long integer, I’ll design my database as such.

Answer 1

Rule of a thumb when dealing with integer values in databases:

If you do not plan on performing any types of mathematical
calculations on the field, store it as a string.

Also according to docs, it is a string:

@property(nonatomic, readonly) NSString *transactionIdentifier