In computer science, an entity is an object that has an identity, which is independent of the changes of its attributes. It represents long-lived information relevant for the users and is usually stored in a database.
Definition of entity noun from the Oxford Advanced Learner's Dictionary. something that exists separately from other things and has its own identity. The unit has become part of a larger department and no longer exists as a separate entity. These countries can no longer be viewed as a single entity.
There are six meanings listed in OED's entry for the noun entity, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.
something that exists as a distinct, separate, independent, or self-contained unit: Germany was a single entity before World War II, became two entities after the war, and now is one entity again.
