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Entity Framework (EF) is an open source [2] object–relational mapping (ORM) framework for ADO.NET. It was originally shipped as an integral part of .NET Framework, however starting with Entity Framework version 6.0 it has been delivered separately from the .NET Framework. Entity Framework 6.4 was the latest release of the classic framework.
An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).
For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. This could be modeled in an object-oriented implementation by a "Person object " with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a ...
CodeIgniter, framework that includes an ActiveRecord implementation; Yii, ORM and framework, released under the BSD license. Based on the ActiveRecord pattern; FuelPHP, ORM and framework for PHP, released under the MIT license. Based on the ActiveRecord pattern. Laminas, framework that includes a table data gateway and row data gateway ...
That is, any complete component object system can be expressed with the templates and empathy model within The Orlando Treaty [2] vision of object-oriented programming. Entity: An entity represents a general-purpose object. In a game engine context, for example, every coarse game object is represented as an entity.
ADO.NET Entity Framework model master: 2.0: Master page file. Default file name is Master1.master resx: 1.0: Resource files for internationalization and localization. Resource files can be global (e.g., messages) or local, which means specific for one aspx or ascx file. sitemap: 2.0: Sitemap configuration files. Default file name is web.sitemap ...
Conceptual data model: describes the semantics of a domain, being the scope of the model. For example, it may be a model of the interest area of an organization or industry. This consists of entity classes, representing kinds of things of significance in the domain, and relationship assertions about associations between pairs of entity classes.
The C4 model relies at this level on existing notations such as Unified Modelling Language (UML), Entity Relation Diagrams (ERD) or diagrams generated by Integrated Development Environments (IDE). For level 1 to 3, the C4 model uses 5 basic diagramming elements: persons, software systems, containers, components and relationships.