I'm not clear on the point here. You can make an application that handles arbitrary SQLite files, (for example: the SQLite shell, or a GUI database broswer), or you can make an application that only uses SQLite files with certain content/schema. Does this mean that SQLite does or does not define a file format?

If not, what do you call the specification of how data is stored in a SQLite file besides a 'file format'?