: 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
"Think of it this way," Sarah said. "In a relational database, you're taking your car apart every time you park it in the garage, then reassembling it when you want to drive. In an object database, you just drive the car into the garage." The Four Pillars of the Garage Fundamentals of Object Databases: Object-Orient...
Alex's mentor, Sarah, pointed to a different path: . Instead of breaking things down, an OODB stores data exactly as it looks in the code. : Every object has a unique Object Identifier