Alex wondered how to talk to this new database. Sarah introduced two key standards defined by the : What Is An Object-Oriented Database? - MongoDB
: The database can handle a "Vehicle" list that contains cars, trucks, and bikes, treating each correctly when asked to "calculate maintenance". Fundamentals of Object Databases: Object-Orient...
: Every object has a unique Object Identifier (OID) that never changes, unlike a primary key that might be tied to a specific column like an ID number. Tools of the Trade Alex wondered how to talk to this new database