entity-relationship model

(redirected from Entity relationship diagrams)

entity-relationship model

(database, specification)
An approach to data modelling proposed by P. Chen in 1976. The model says that you divide your database in two logical parts, entities (e.g. "customer", "product") and relations ("buys", "pays for").

Entity-relationship diagrams can be used to represent a model.

["The entity-relationship model: toward a unified view of data", P.P. Chen, ACM Transactions on Database Systems 1:1 pp 9-36, 1976].
References in periodicals archive ?
These visualizations include: Matrices, Cluster Maps and Timelines; Flow Diagrams, Entity Relationship Diagrams, and diagrams based on industry standard notations BPMN, EPC, UML and ArchiMate; Bar charts, Bubble charts, Pie charts, Scatter charts, Radar charts and Sunburst charts; and more specialist visualizations including Geographic Maps, Gauges, Tree Maps, Dashboards, a Business Model canvas, and full 3D visualizations.
Other applications in Easy Office include Easy VoIP, which allows you to make free phone calls over the Internet, Easy Project to manage your projects, Easy File Encryption for securing your files and e-mail message, Easy Data Remover to delete sensitive files from your computer permanently and Easy Diagram to create different types of diagrams, including flowcharts, entity relationship diagrams and much more.
Teams of analysts steadily decompose the current server model and application code to produce a new set of Entity Relationship Diagrams and Function Hierarchy Diagrams (FHD) ensuring that no functionality of the products is lost.
4Keeps supports many of the commonly-used data modeling methodologies, including the Booch, Rumbaugh, and Shlaer-Mellor object class diagrams and the Chen and Martin entity relationship diagrams.
Toad Data Modeler - enables designers, developers and DBAs to easily create and maintain database structures across more than 20 database platforms by building entity relationship diagrams, generating SQL (DDL) scripts, reverse engineering databases, generating detailed HTML and RTF documentation, building data flow diagrams, and exporting to XML and other popular formats.
Full documentation and an on-line Javadoc on the Xng BDL API, a style guide to assist in creating custom applications, schema documentation and entity relationship diagrams that describe database columns, table relationships and their purpose.
It performs "push-button" translation of Entity Relationship Diagrams (ERDs) into Class Diagrams and vice versa, saving developers significant time in building error-free models.
DISCOVER allows software developers to navigate, comprehend, analyze dependencies, and manage source code through a variety of textual views and queries about files, functions, variables, and classes, as well as graphical views like call tree, class inheritance, entity relationship diagrams, and outlines.
DISCOVER allows Cincom software developers to more quickly navigate, comprehend, and analyze dependencies and manage source code through a variety of textual views and queries about files, functions, variables, and classes, as well as graphical views like call tree, class inheritance, entity relationship diagrams, and outlines.
Manage - Use DISCOVER to navigate, comprehend, analyze dependencies, and manage source code through a variety of textual views and queries about files, functions, variables, and classes, as well as graphical views like call tree, class inheritance, entity relationship diagrams, and outlines.
The product supports data modeling and database design using entity relationship diagrams (ERDs) notations/methods by Martin, Bachman, IDEF1X, or Shlaer-Mellor.