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Database Model

A database model is a theory or specification describing how a database is structured and used. S Database systems can be based on different data models or database models respectively. A data model is...

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Hierarchical Model

A hierarchical database model is a data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships: each parent can...

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Network Model

The network model is a database model conceived as a flexible way of representing objects and their relationships. Its distinguishing feature is that the schema, viewed as a graph in which object types...

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Relational Model

The relational model for database management is a database model based on first-order predicate logic, The purpose of the relational model is to provide a declarative method for specifying data and...

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Entity–Relationship Model

In software engineering, an entity–relationship model (ER model for short) is an abstract and conceptual representation of data. Entity–relationship modeling is a database modeling method, used to...

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Object-relational Model

An object-relational database  is a database management system  similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in...

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Flat Model

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...

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Multivalue Model

Multivalue databases are ‘lumpy’ data, in that they can store exactly the same way as Relational Databases, but they also permit a level of depth which the relational model can only approximate using...

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Dimensional Model

The dimensional model is a specialized adaptation of the relational model used to represent data in data warehouses in a way that data can be easily summarized using OLAP queries. In the dimensional...

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