A database model is a theory or specification describing how a database is structured and used. Several such models have been suggested. To meet Wikipedias quality standards, this article or section may require cleanup. ... The network model is a database model conceived as a more flexible alternative to the hierarchical model. ... The relational model for database management is a data model based on predicate logic and set theory. ... An object-relational database (ORD) or object-relational database management system (ORDBMS) is a relational database management system that allows developers to integrate the database with their own custom data types and methods. ... An object database is a database in which information is represented in the form of objects. ... Multidimensional databases are variously (depending on the context) data aggregators which combine data from a multitude of data sources; databases which offer networks, hierarchies, arrays and other data formats difficult to model in SQL; or databases which offer a high degree of flexibility in the definition of dimensions, units, and... The star schema (sometimes referenced as star join schema) is the simplest data warehouse schema, consisting of a single fact table with a compound primary key, with one segment for each dimension and with additional columns of additive, numeric facts. ... A database is an organized collection of data. ...
Other models include: To meet Wikipedias quality standards, this article or section may require cleanup. ... The network model is a database model conceived as a more flexible alternative to the hierarchical model. ... The relational model for database management is a data model based on predicate logic and set theory. ... // Computer Science In the computing discipline object model has two related but distinct meanings: 1. ...
For instance, one databasemodel is to associate each fact with a record representing an entity (such as a person), and to arrange these entities into trees or hierarchies -- the hierarchical databasemodel.
The flat (or table) model consists of a single, two-dimensional array of data elements, where all members of a given column are assumed to be similar values, and all members of a row are assumed to be related to one another.
The dimensional model is often implemented on top of the relational model using a star schema, consisting of one table containing the facts and surrounding tables containing the dimensions.
Feeds |
Contact