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...

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...

just as with pure relational systems, it supports extension of the data model with custom data types and methods. An object–relational database can be said...

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...

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...

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...

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

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

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

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

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...

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...

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

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...

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

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...

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...

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

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...

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

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...

for relational databases Relational concept, a set of mathematically defined tuples in tuple relational calculus Relational model, a database model based...

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...

the relational model is so called because of the stating of relationships between data elements therein. This is not true. The relational model is so...

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

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...