Database model is a type of data model that determines the logical structure of a database.
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14 Facts About Database model
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The most popular example of a database model is the relational model, which uses a table-based format.
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Network Database model is able to represent redundancy in data more efficiently than in the hierarchical Database model, and there can be more than one path from an ancestor node to a descendant.
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The operations of the network Database model are navigational in style: a program maintains a current position, and navigates from one record to another by following the relationships in which the record participates.
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The inverted file data model can put indexes in a set of files next to existing flat database files, in order to efficiently directly access needed records in these files.
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Notable for using this data Database model is the ADABAS DBMS of Software AG, introduced in 1970.
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Products that are generally referred to as relational databases in fact implement a model that is only an approximation to the mathematical model defined by Codd.
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Basic data structure of the relational Database model is the table, where information about a particular entity is represented in rows and columns.
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One of the strengths of the relational Database model is that, in principle, any value occurring in two different records, implies a relationship among those two records.
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Dimensional Database model is a specialized adaptation of the relational Database model used to represent data in data warehouses in a way that data can be easily summarized using online analytical processing, or OLAP queries.
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Dimensional Database model is often implemented on top of the relational Database model using a star schema, consisting of one highly normalized table containing the facts, and surrounding denormalized tables containing each dimension.
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Some extensions to the relational Database model integrate concepts from technologies that pre-date the relational Database model.
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Resource space Database model is a non-relational data Database model based on multi-dimensional classification.
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