instance of an entity-type

См. также в других словарях:

• Entity class — When Dr. Chen developed entity/relationship modeling [1] (commonly known as data modeling), he used the term entity type to define the boxes on his diagrams as representing classes of things. For example Person would be an entity type, and Sally… …   Wikipedia

• Entity-relationship model — A sample Entity relationship diagram using Chen s notation In software engineering, an entity relationship model (ERM) is an abstract and conceptual representation of data. Entity relationship modeling is a database modeling method, used to… …   Wikipedia

• Entity–attribute–value model — (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In… …   Wikipedia

• Entity-attribute-value model — (EAV), also known as object attribute value model and open schema is a data model that is used in circumstances where the number of attributes (properties, parameters) that can be used to describe a thing (an entity or object ) is potentially… …   Wikipedia

• Type (metaphysics) — In metaphysics, a type is a category of being. A human is a type of thing; a cloud is a type of thing (entity); and so on. A particular instance of a type is called a token of that thing; so Socrates was a token of a human being, but is not any… …   Wikipedia

• Document Type Definition — (DTD) is a set of markup declarations that define a document type for SGML family markup languages (SGML, XML, HTML). DTDs were a precursor to XML schema and have a similar function, although different capabilities. DTDs use a terse formal syntax …   Wikipedia

• ADO.NET Entity Framework — is an object relational mapping (ORM) framework for the .NET Framework. This framework is Microsoft s first ORM offering for the .NET Framework. While Microsoft provided objects to manage the Object relational impedance mismatch (such as a… …   Wikipedia

• Named entity recognition — (NER) (also known as entity identification (EI) and entity extraction) is a subtask of information extraction that seeks to locate and classify atomic elements in text into predefined categories such as the names of persons, organizations,… …   Wikipedia

• Named-entity recognition — (NER) (also known as entity identification and entity extraction) is a subtask of information extraction that seeks to locate and classify atomic elements in text into predefined categories such as the names of persons, organizations, locations,… …   Wikipedia

• реализация типа сущности — экземпляр типа сущности Отдельная сущность, для которой истинно некоторое высказывание по поводу ее типа. [ГОСТ 34.320 96] Тематики базы данных Синонимы экземпляр типа сущности EN instance of an entity typeoccurence of an entity type …   Справочник технического переводчика

• Conceptual schema — A conceptual schema or conceptual data model is a map of concepts and their relationships. This describes the semantics of an organization and represents a series of assertions about its nature. Specifically, it describes the things of… …   Wikipedia