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  2. Entity–relationship model - Wikipedia

    en.wikipedia.org/wiki/Entity–relationship_model

    An entity may be defined as a thing that is capable of an independent existence that can be uniquely identified, and is capable of storing data. [5] An entity is an abstraction from the complexities of a domain. When we speak of an entity, we normally speak of some aspect of the real world that can be distinguished from other aspects of the ...

  3. Ontology - Wikipedia

    en.wikipedia.org/wiki/Ontology

    Ontology is the philosophical study of being.It is traditionally understood as the subdiscipline of metaphysics focused on the most general features of reality.As one of the most fundamental concepts, being encompasses all of reality and every entity within it.

  4. Entity concept - Wikipedia

    en.wikipedia.org/wiki/Entity_concept

    Under the business entity concept, a business holds separate entity and distinct from its owners. "The entity view holds the business 'enterprise to be an institution in its own right separate and distinct from the parties who furnish the funds" [1] An example is a sole trader or proprietorship. The sole trader takes money from the business by ...

  5. Existence - Wikipedia

    en.wikipedia.org/wiki/Existence

    The existential quantifier ∃ is often used in logic to express existence.. Existence is the state of having being or reality in contrast to nonexistence and nonbeing.Existence is often contrasted with essence: the essence of an entity is its essential features or qualities, which can be understood even if one does not know whether the entity exists.

  6. Process philosophy - Wikipedia

    en.wikipedia.org/wiki/Process_philosophy

    The process metaphysics elaborated in Process and Reality [21] posits an ontology which is based on the two kinds of existence of an entity, that of actual entity and that of abstract entity or abstraction, also called 'object'. [22] Actual entity is a term coined by Whitehead to refer to the entities that really exist in the natural world. [23]

  7. Theory of the firm - Wikipedia

    en.wikipedia.org/wiki/Theory_of_the_firm

    The theory of the firm consists of a number of economic theories that explain and predict the nature of the firm, company, or corporation, including its existence, behaviour, structure, and relationship to the market. [1] Firms are key drivers in economics, providing goods and services in return for monetary payments and rewards.

  8. History of ontology - Wikipedia

    en.wikipedia.org/wiki/History_of_ontology

    God has a special status since He is the only entity whose essence is identical to its existence. But for all other, finite entities there is a real distinction between essence and existence. [37] This distinction shows itself, for example, in our ability to understand the essence of something without knowing about its existence. [38]

  9. Ontological commitment - Wikipedia

    en.wikipedia.org/wiki/Ontological_commitment

    Willard Van Orman Quine provided an early and influential formulation of ontological commitment: [4]. If one affirms a statement using a name or other singular term, or an initial phrase of 'existential quantification', like 'There are some so-and-sos', then one must either (1) admit that one is committed to the existence of things answering to the singular term or satisfying the descriptions ...