A relational database is a (most commonly digital) database based on the relational model of data, as proposed by E. F. Codd in 1970. A system used to...

object–relational database (ORD), or object–relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database...

grouped into relations. A database organized in terms of the relational model is a relational database. The purpose of the relational model is to provide a...

Database normalization or database normalisation (see spelling differences) is the process of structuring a relational database in accordance with a series...

Amazon Relational Database Service (or Amazon RDS) is a distributed relational database service by Amazon Web Services (AWS). It is a web service running...

A NoSQL (originally referring to "non-SQL" or "non-relational") database provides a mechanism for storage and retrieval of data that is modeled in means...

classify database management systems according to the database models that they support. Relational databases became dominant in the 1980s. These model data...

Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between a relational database...

This is a list of relational database management systems. 4th Dimension Access Database Engine (formerly known as Jet Database Engine) Adabas D Airtable...

object–relational impedance mismatch is a set of conceptual and technical difficulties that are often encountered when a relational database management...

tables, as needed. In the field of relational database design, normalization is a systematic way of ensuring that a database structure is suitable for general-purpose...

In database theory, relational algebra is a theory that uses algebraic structures for modeling data, and defining queries on it with a well founded semantics...

technologies to graph databases. Also in the 2010s, multi-model databases that supported graph models (and other models such as relational database or document-oriented...

A distributional–relational database, or word-vector database, is a database management system (DBMS) that uses distributional word-vector representations...

of relational database management systems Comparison of object–relational database management systems Database management system List of relational database...

comparison of object–relational database management systems (ORDBMSs). Each system has at least some features of an object–relational database; they vary widely...

ArangoDB native multi-model database system. .QL is a proprietary object-oriented query language for querying relational databases; successor of Datalog; CodeQL...

a database model is the relational model, which uses a table-based format. Common logical data models for databases include: Hierarchical database model...

including database servers, developed by IBM. It initially supported the relational model, but was extended to support object–relational features and...

of how the database is constructed (divided into database tables in the case of relational databases). The formal definition of a database schema is a...

as Codd's relational model became the de facto standard used by virtually all mainstream database management systems. A relational-database implementation...

A spatial database is a general-purpose database (usually a relational database) that has been enhanced to include spatial data that represents objects...

programming. Object databases are different from relational databases which are table-oriented. A third type, object–relational databases, is a hybrid of...

tables compare general and technical information for a number of relational database management systems. Please see the individual products' articles...

the relational model for databases and provide a declarative way to specify database queries. The raison d'être of relational calculus is the formalization...

schema is taken to include a name. A relational database definition (database schema, sometimes referred to as a relational schema) can thus be thought of as...

programming techniques. Document databases contrast strongly with the traditional relational database (RDB). Relational databases generally store data in separate...

designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS)...

are defined, it is possible to develop fuzzy relational databases. The first fuzzy relational database, FRDB, appeared in Maria Zemankova's dissertation...

provides methods to query and update data in a database, and is oriented toward relational databases. A JDBC-to-ODBC bridge enables connections to any...