Data model: Difference between revisions

Revision as of 03:49, 6 May 2024

Revision as of 12:51, 6 May 2024

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: This model organizes data using two fundamental constructs, called records and sets. Records contain fields, and sets define one-to-many relationships between records: one owner, many members. The network data model is an abstraction of the design concept used in the implementation of databases.

; [[Relational model]]

: is a database model based on first-order predicate logic. Its core idea is to describe a database as a collection of predicates over a finite set of predicate variables, describing constraints on the possible values and combinations of values. The power of the relational data model lies in its mathematical foundations and a simple user-level paradigm. In other words, Representing records in a table. Where title(topic) being field like mammal and records being dog,cat, human, etc they are with in one column of related data.

; [[Object–relational model]]

: Similar to a relational database model, but objects, classes, and inheritance are directly supported in [[database schema]]s and in the query language.