Similar to Object_Definition_Language

Has-a

Interoperable Object Reference

Is-a

IUnknown

Modelica

Objectory

OOPSLA

Resource acquisition is initialization

RPCGEN

SOLID

This (computer programming)

Uniform Function Call Syntax

Universal Network Objects

Wolfram SystemModeler

Java annotation

Delegation (object-oriented programming)

Instance variable

Interface segregation principle

Object–relational impedance mismatch

Web Components

Method overriding

Object–relational database

Object–relational mapping