Instantiation

Instantiation or instance

• Philosophy:

• A modern concept similar to participation in classical Platonism, see the Theory of Forms.
• The principle of instantiation, the idea that in order for a property to exist, it must be had by some object or substance.
• Universal instantiation and existential instantiation, two rules of logical inference
• A substitution instance is a formula of mathematical logic that can be produced by substituting certain strings of symbols for others in formulas.

• Instance (computer science) can refer generally to any running process, or specifically to an object, as in an instance of a class. The process of creating a new object (or instance of a class) is often referred to as instantiation.
• Table instance (or database instance), a concept in database design; see Row (database)
• Instance dungeon, a feature of many online games such as World of Warcraft and City of Heroes
• Instance (programming) can refer to part of physical memory allocated to access to the database or the SGA (system global area) + background processes.