• [ORM wiki](https://en.wikipedia.org/wiki/Object%E2%80%93relational_mapping#:~:text=Object%E2%80%93relational%20mapping%20(ORM%2C,from%20within%20the%20programming%20language)

Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between a relational database and the heap of an object-oriented programming language. This creates, in effect, a virtual object database that can be used from within the programming language.