Relational Database

A relational database is a collection of data items organized as a set of formally described tables from which data can be accessed easily. A relational database is created using the relational model. The software used in a relational database is called a relational database management system (RDBMS). A relational database is the predominant choice in storing data, over other models like the hierarchical database model or the network model.

The relational database was first defined in June 1970 by Edgar Codd, of IBM's San Jose Research Laboratory.

Read more about Relational DatabaseTerminology, Relations or Tables, Base and Derived Relations, Constraints, Relational Operations, Normalization, Relational Database Management Systems

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Relational Database Management Systems
... Relational databases, as implemented in relational database management systems, have become a predominant choice for the storage of information in new databases used for financial ... Relational databases have often replaced legacy hierarchical databases and network databases because they are easier to understand and use, even though they are much less efficient ... power has increased, the inefficiencies of relational databases, which made them impractical in earlier times, have been outweighed by their ease of use ...
Java Persistence API - Related Technologies - Java Data Objects API
... The Java Persistence API specifies persistence only for relational database management systems ... That is, JPA focuses on object-relational mapping (ORM) (note that there are JPA providers who support other database models besides relational database, but this is outside the scope of what JPA was designed for) ... The technical objective of this work is to provide an object/relational mapping facility for the Java application developer using a Java domain model to manage a relational database." The Java Data Objects ...
Database Model - Models - Relational Model
... The relational model was introduced by E.F ... Codd in 1970 as a way to make database management systems more independent of any particular application ... The 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 ...
Database Constraints - Relational Database Management Systems
... Relational databases, as implemented in relational database management systems, have become a predominant choice for the storage of information in new databases used for financial records, manufacturing ... Relational databases have often replaced legacy hierarchical databases and network databases because they are easier to understand and use, even though they are much less efficient ... As computer power has increased, the inefficiencies of relational databases, which made them impractical in earlier times, have been outweighed by their ease of use ...
Life Cycle Of A Relational Database
... The life cycle of a relational database is the cycle of development and changes that a relational database goes through during the course of its life ... There is a possibility that the database designer/developer can go back to any of the previous stages ... The typical eleven stages involved in the life cycle of a relational database are as follows ...