The relational model (RM) is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in...

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

database model: objects, classes and inheritance are directly supported in database schemas and in the query language. Also, as with pure relational systems...

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

Relational models theory (RMT) is a theory of interpersonal relationships, authored by anthropologist Alan Fiske and initially developed from his fieldwork...

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...

pp. 14–5 Chandler & Munday 2011c, relational models Schramm 1971, p. 14. Chandler & Munday 2011c, relational models. Babe 2015, pp. 115, 128. Schramm...

hierarchies over the same data. The hierarchical data model lost traction as Codd's relational model became the de facto standard used by virtually all mainstream...

systems according to the database models that they support. Relational databases became dominant in the 1980s. These model data as rows and columns in a series...

proposed by British computer scientist Edgar F. Codd as part of his relational model. Normalization entails organizing the columns (attributes) and tables...

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

Relational Model/Tasmania (RM/T) was published by Edgar F. Codd in 1979 and is the name given to a number of extensions to his original relational model...

The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases. It is based...

an abstract data model, that defines a data or information structure that can be implemented in a database, typically a relational database. Entity–relationship...

model Hierarchical model Network model Relational model Concept-oriented model Star schema A data structure diagram (DSD) is a diagram and data model...

data model can involve hundreds of related tables. Computer scientist Edgar F. Codd created a systematic method to decompose and organize relational databases...

Object–relational impedance mismatch is a set of difficulties going between data in relational data stores and data in domain-driven object models. Relational...

languages to use Edgar F. Codd's relational model. The model was described in his influential 1970 paper, "A Relational Model of Data for Large Shared Data...

for IBM, invented the relational model for database management, the theoretical basis for relational databases and relational database management systems...

relational calculus consists of two calculi, the tuple relational calculus and the domain relational calculus, that is part of the relational model for...

key–value models are examples of data models that may be supported by a multi-model database. The relational data model became popular after its publication...

Information Modeling Relational Model Relational Model/Tasmania Generic data models are generalizations of conventional data models. They define standardized...

Statistical relational learning (SRL) is a subdiscipline of artificial intelligence and machine learning that is concerned with domain models that exhibit...

or "non-relational") is an approach to database design that focuses on providing a mechanism for storage and retrieval of data that is modeled in means...

Codd as part of the relational model, in order to provide a declarative database-query language for data manipulation in this data model. It formed the inspiration...

data model (organization of data in a database) which does not meet any of the conditions of database normalization defined by the relational model. Database...

1970s before being widely replaced by relational databases in the 1980s. While the hierarchical database model structures data as a tree of records, with...

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

with Edgar F. Codd’s relational model for database management. He left IBM in 1983 and has written extensively of the relational model, in association with...

First normal form (1NF) is a property of a relation in a relational database. A relation is in first normal form if and only if no attribute domain has...