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Digital database whose organization is based on the relational model of data
A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A Relational Database Management System
Relational_database
Database management system
object–relational database (ORD), or object–relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database
Object–relational_database
Database model
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
Relational_model
Cloud-based service
Amazon Relational Database Service (or Amazon RDS) is a distributed relational database service by Amazon Web Services (AWS). It is a web service running
Amazon Relational Database Service
Amazon_Relational_Database_Service
This is a list of relational database management systems. Proprietary Open source Apache OpenOffice Base HSQLDB LibreOffice Base Firebird HSQLDB Microsoft
List of relational database management systems
List_of_relational_database_management_systems
Reduction of data redundancy
Database normalization is the process of structuring a relational database in accordance with a series of normal forms to reduce data redundancy and improve
Database_normalization
Programming technique
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
Object–relational_mapping
Database class for storage and retrieval of modeled data
"non-relational") refers to a type of database design that stores and retrieves data differently from the traditional table-based structure of relational databases
NoSQL
Organized collection of data in computing
scientists may classify database management systems according to the database models that they support. Relational databases became dominant in the 1980s
Database
tables compare general and technical information for a number of relational database management systems. Please see the individual products' articles
Comparison of relational database management systems
Comparison_of_relational_database_management_systems
Database using graph structures for queries
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
Graph_database
Theory of relational databases
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_algebra
Computer language used to make queries into databases and information systems
ArangoDB native multi-model database system. .QL is a proprietary object-oriented query language for querying relational databases; successor of Datalog. CodeQL
Query_language
Set of conceptual and technical difficulties
domain-driven object models. Relational Database Management Systems (RDBMS) is the standard method for storing data in a dedicated database, while object-oriented
Object–relational impedance mismatch
Object–relational_impedance_mismatch
Processing mode
database term online transaction processing (OLTP). OLAP is part of the broader category of business intelligence, which also encompasses relational databases
Online_analytical_processing
Proprietary database management system
Oracle Database (marketed since 2025 as Oracle AI Database, and also referred to as Oracle DBMS or simply Oracle) is a proprietary relational database management
Oracle_Database
Designing how data is held in a database
than one parent. In the field of relational database design, normalization is a systematic way of ensuring that a database structure is suitable for general-purpose
Database_design
Database running on a cloud computing platform
maintained by a cloud database provider. Cloud databases may use either a relational SQL or a NoSQL data model. Database services handle scalability and high availability
Cloud_database
Database of data representing objects in geometric space
A spatial database is a general-purpose database (usually a relational database) that has been enhanced to include spatial data that represents objects
Spatial_database
Relational database design
the relational model for databases, designed to define what is required from a database management system in order for it to be considered relational, i
Codd's_12_rules
System for reasoning about vagueness
are defined, it is possible to develop fuzzy relational databases. The first fuzzy relational database, FRDB, appeared in Maria Zemankova's dissertation
Fuzzy_logic
Type of data model
a database model is the relational model, which uses a table-based format. Common logical data models for databases include: Hierarchical database model
Database_model
Relational database programming language
a domain-specific language used to manage data, especially in a relational database management system (RDBMS). It is particularly useful in handling
SQL
Method of media consumption
relational database. As mentioned above, Azuma cites how Japanese otaku content has been consumed since the late 1990s as a major example of database
Database_consumption
Type of computer program
programming techniques. Document databases differ significantly from traditional relational databases (RDBs). Relational databases store data in predefined tables
Document-oriented_database
API for Java
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
Java_Database_Connectivity
Computer server providing database services
all relational database applications. For clarification, a database server is simply a server that maintains services related to clients via database applications
Database_server
Database presenting data as objects
programming. Object databases are different from relational databases which are table-oriented. A third type, object–relational databases, is a hybrid of
Object_database
Database presenting data in XML formats
XML database structure will avoid compatibility issues Data may need to be exposed or ingested as XML, so using another format such as relational forces
XML_database
American computer software company
of relational database software for computers using the Unix, Microsoft Windows, and Apple Macintosh operating systems. 1980: Relational Database Systems
Informix_Corporation
comparison of object–relational database management systems (ORDBMSs). Each system has at least some features of an object–relational database; they vary widely
Comparison of object–relational database management systems
Comparison_of_object–relational_database_management_systems
British database researcher (born 1941)
independent author, lecturer, researcher and consultant, specialising in relational database theory. Chris Date attended High Wycombe Royal Grammar School from
Christopher_J._Date
Visual representation of database system relationships
The database schema is the structure of a database described in a formal language supported typically by a relational database management system (RDBMS)
Database_schema
Database 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 systems which support
Unnormalized_form
English computer scientist
IBM, invented the relational model for database management, the theoretical basis for relational databases and relational database management systems
Edgar_F._Codd
Database software
Ingres Database (/ɪŋˈɡrɛs/ ing-GRESS) is a proprietary SQL relational database management system intended to support large commercial and government applications
Ingres_(database)
Type of database management system
A distributional–relational database, or word-vector database, is a database management system (DBMS) that uses distributional word-vector representations
Distributional–relational database
Distributional–relational_database
Set of tuples consisting of values indexed by attributes
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
Relation_(database)
Theory of relational databases
the relational model for databases and provide a declarative way to specify database queries. The raison d'être of relational calculus is the formalization
Relational_calculus
SQL database engine software
MySQL (/ˌmaɪˌɛsˌkjuːˈɛl/) is a free and open-source relational database management system (RDBMS). Its name is a combination of "My", the name of co-founder
MySQL
Tree-like structure for data
end in order to retrieve data. When the relational database model emerged, one criticism of hierarchical database models was their close dependence on
Hierarchical_database_model
Computer software
The MICRO Relational Database Management System was the first large-scale set-theoretic database management system to be used in production. Though MICRO
MICRO Relational Database Management System
MICRO_Relational_Database_Management_System
Overview of and topical guide to databases
handle workloads whose state is constantly changing (Buchmann). Relational database – collection of data items organized as a set of formally described
Outline_of_databases
Type of NoSQL database
Information Solutions, ONgroup, and other companies. These databases differ from a relational database in that they have features that support and encourage
MultiValue_database
Level of database normalization
most basic level of database normalization defined by English computer scientist Edgar F. Codd, the inventor of the relational database. A relation (or a
First_normal_form
Relational database management system
Derby (previously distributed as IBM Cloudscape) is a (retired) relational database management system (RDBMS) developed by the Apache Software Foundation
Apache_Derby
Function of managing and maintaining DBMS software
(RBA) Relational model (RDBMS) Comparison of relational database management systems Comparison of database tools SQL is a language for database management
Database_administration
Database management system
supported only one model, such as: relational database, document-oriented database, graph database or triplestore. A database that combines many of these is
Multi-model_database
Relational model database server
including database servers, developed by IBM. It initially supported the relational model, but was extended to support object–relational features and
IBM_Db2
Managed cloud database
involvement. Azure SQL Database supports multi-modal storage of structured, semi-structured, and non-relational data. Azure SQL Database includes built-in
Microsoft_Azure_SQL_Database
Set of data elements in databases
In a database, a table is a collection of related data organized in table format (consisting of columns and rows). In relational databases, and flat file
Table_(database)
American businessman (born 1944)
the mainframe relational database market with its DB2 and SQL/DS database products, it delayed entering the market for a relational database on Unix and
Larry_Ellison
Data values in computer science
In a relational database, a column is a set of data values of a particular type, one value for each row of a table. A column may contain text values,
Column_(database)
American computer scientist (born 1943)
database systems. Through a series of academic prototypes and commercial startups, Stonebraker's research and products are central to many relational
Michael_Stonebraker
Relational database which stores data across multiple servers
A distributed SQL database is a single relational database which replicates data across multiple servers. Distributed SQL databases are strongly consistent
Distributed_SQL
Model or diagram describing interrelated things
that can be implemented in a database, typically a relational database. Entity–relationship modeling was developed for database and design by Peter Chen and
Entity–relationship_model
Serverless relational database management system
"S-Q-L-ite", /ˈsiːkwəˌlaɪt/ "sequel-ite") is a free and open-source relational database engine written in the C programming language. It is not a standalone
SQLite
Database in which records or objects are found by following references from other objects
difference between navigational APIs and the relational model (implemented in relational databases) is that relational APIs use "declarative" or logic programming
Navigational_database
Relational model
and introduced by Edgar F. Codd as part of the relational model, in order to provide a declarative database-query language for data manipulation in this
Tuple_relational_calculus
Software architecture
processing; it was further extended to be the base of IBM's Distributed Relational Database Architecture (DRDA); and finally, it was extended to support data
Distributed Data Management Architecture
Distributed_Data_Management_Architecture
Database management system
H2 is a relational database management system written in Java. It can be used as an embedded database in Java applications or run in client–server mode
H2_Database_Engine
Digital object that holds together all column families of a design
of the data in the data store. It resembles the schema concept in Relational database management systems. Generally, there is one keyspace per application
Keyspace (distributed data store)
Keyspace_(distributed_data_store)
Book relating postmodernism to otaku
in parts in an "animalistic" nature, behaving almost like a human relational database. Azuma observes the decline of a grand narrative, replaced by an
Otaku: Japan's Database Animals
Otaku:_Japan's_Database_Animals
Software library providing an embedded transactional key-value database
records (MDB_APPEND) without checking for consistency. LMDB is not a relational database, it is strictly a key-value store like Berkeley DB and DBM. LMDB
Lightning Memory-Mapped Database
Lightning_Memory-Mapped_Database
Topics referred to by the same term
refer to: Microsoft SQL Server, a relational database server from Microsoft Sybase SQL Server, a relational database server developed by Sybase SQL This
SQL_Server
Type of data model
one would try to represent a general-purpose clinical record in a relational database. Clearly creating a table (or a set of tables) with thousands of
Entity–attribute–value_model
Database management system
in-process) storage modes (on-disk, in-memory, and combined) database models (relational, object-oriented, entity–attribute–value model, network/CODASYL)
Embedded_database
Database language proposed by Edgar F. Codd
Alpha language was the original database language proposed by Edgar F. Codd, the inventor of the relational database approach. It was defined in Codd's
Alpha_(programming_language)
Data modeling construct
collection of triples is often stored in purpose-built databases called triplestores. A relational database is the classical form for information storage, working
Semantic_triple
American multinational computer corporation
the 1970 paper written by Edgar F. Codd on relational database management systems (RDBMS) named "A Relational Model of Data for Large Shared Data Banks
Oracle_Corporation
YDB (Yet another DataBase) is a distributed SQL database management system (DBMS) developed by Yandex, available as open-source technology. YDB is a technology
YDB_(database)
Relational database service
proprietary relational database offered as a service by Amazon Web Services (AWS) since October 2014. Aurora is available as part of the Amazon Relational Database
Amazon_Aurora
Way to obtain data from a database
developed specifically to write database queries. Each database management system may have its own language, but most are relational.[clarification needed] Reports
Data_retrieval
SQL database profiling tool and GUI
connects to many major relational databases, facilitating SQL querying, database structure design, database content editing, and database comparison and conversion
DatabaseSpy
Open source column-oriented RDBMS
column-oriented Relational Database Management System (RDBMS). It is designed to provide high performance on complex queries against large databases in embedded
DuckDB
Database management system
in-memory relational database management system developed and sold by UNICOM Global. solidDB is designed for extreme speed as a persistent, relational in-memory
SolidDB
The Suppliers and Parts database is an example relational database that is referred to extensively in the literature[citation needed] and described in
Suppliers_and_Parts_database
Dutch computer scientist (born 1938)
Nijssen and Terry Halpin published 'the book Conceptual schema and relational database design: a fact oriented approach. The introduction it declared the
G._M._Nijssen
Relational database management system, first implementation of SQL
ideas on relational databases. System R was a seminal project as the first implementation of SQL, which has since become the standard relational data query
IBM_System_R
Centralized storage of knowledge
Source systems of data (often, the company's operational databases, such as relational databases); Data integration technology and processes to extract
Data_warehouse
Server operating system
addressing on top of a single-level store, and the tight integration of a relational database into the operating system. OS/400 was developed alongside the AS/400
IBM_i
Algorithm used in relational databases
example of a join algorithm and is used in the implementation of a relational database management system. All variants of hash join algorithms involve building
Hash_join
Open-source time series database
database developed by Timescale Inc. (renamed "TigerData" on June 17, 2025). It is written in C and extends PostgreSQL. TimescaleDB is a relational database
TimescaleDB
Creation of knowledge from structured and unstructured sources
Knowledge extraction is the creation of knowledge from structured (relational databases, XML) and unstructured (text, documents, images) sources. The resulting
Knowledge_extraction
management systems Comparison of relational database management systems Object–relational database "Db4o :: Java & .NET Object Database :: Db4o Opensource Compatibility
Comparison of object database management systems
Comparison_of_object_database_management_systems
Data about other data
human-readable content. Each relational database system has its own mechanisms for storing metadata. Examples of relational-database metadata include: Tables
Metadata
Family of database software by Microsoft
proprietary relational database management system developed by Microsoft using Structured Query Language (SQL, often pronounced "sequel"). As a database server
Microsoft_SQL_Server
ODBC, standard interface for accessing database systems
other with few changes. The introduction of the mainframe-based relational database during the 1970s led to a proliferation of data access methods. Generally
Open_Database_Connectivity
Software layer that provides access to data
provides access to data from one or more sources, such as a relational database, NoSQL database, SQL query engine, file system, or other persistent storage
Data_access_layer
Relational database management system
open-source SQL relational database management system that supports Linux, Microsoft Windows, macOS and other Unix platforms. The database forked from Borland's
Firebird_(database_server)
Database transaction integrity concept
Durability Lock (database) Optimistic concurrency control Relational Database Management System Snapshot isolation "Isolation Levels in the Database Engine",
Isolation_(database_systems)
software system used to maintain relational databases is a relational database management system (RDBMS). Many relational database systems have an option of
Glossary_of_computer_science
Unit of work performed within a database management system
sequential) execution. Most modern[update] relational database management systems support transactions. NoSQL databases prioritize scalability along with supporting
Database_transaction
Service that maps the names of network resources to their respective network addresses
authorized users. Several things distinguish a directory service from a relational database. Data can be made redundant if it aids performance (e.g. by repeating
Directory_service
Acronym for a common web hosting solution
the operating system Apache HTTP Server MariaDB or MySQL for the relational database management system Perl, PHP, or Python for the programming language
LAMP_(software_bundle)
Normal form used in database normalization
article "A Relational Model of Data for Large Shared Databanks" in June 1970. This was the first time the notion of a relational database was published
Boyce–Codd_normal_form
Topics referred to by the same term
technique for relational databases Relational concept, a set of mathematically defined tuples in tuple relational calculus Relational model, a database model
Relational
Unordered set of n-time-series possibly of different lengths
many different database types, the design of these systems with time as a key index is distinctly different from relational databases which reduce discrete
Time_series_database
Relational database management system
NewSQL is a class of relational database management systems that seek to provide the scalability of NoSQL systems for online transaction processing (OLTP)
NewSQL
American businessman (1941–1994)
Oracle's relational database management system. From 1977 until 1992, Miner led product design and development for the Oracle relational database management
Bob_Miner
RELATIONAL DATABASE
RELATIONAL DATABASE
Boy/Male
Hindu
Rational
Girl/Female
Hindu, Indian
Rational
Girl/Female
Hindu, Indian
Friendship; Good Relation
Boy/Male
Indian
Talker, Speaker, Rational
Girl/Female
Hindu, Indian
Rational
Boy/Male
Tamil
Jasevaraj | ஜஸேவாராஜ
Heart of relation
Jasevaraj | ஜஸேவாராஜ
Girl/Female
German, Greek
Noble; Kind; Rational
Boy/Male
Tamil
Rational
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Animated; Rational
Boy/Male
Tamil
Relation
Boy/Male
Tamil
Rational
Girl/Female
Muslim
Relation, Way, Sake
Boy/Male
Assamese, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Friend; Relation
Boy/Male
Hindu
Rational
Boy/Male
Hindu, Indian
Relation; Connection
Boy/Male
Hindu, Indian
Leader; Relation
Girl/Female
Hindu, Indian
Relation
Boy/Male
Muslim
Talker, Speaker, Rational
Boy/Male
Indian
Relation
Boy/Male
Hindu, Indian
Relation
RELATIONAL DATABASE
RELATIONAL DATABASE
Boy/Male
Hindu
Free
Boy/Male
Biblical
Their breasts, friendship, a judge.
Girl/Female
American, Australian, Biblical, Christian, French, Hebrew, Jewish, Polish
Like the Lord; Brook; Who is Like God
Girl/Female
Australian, Danish, French, German, Latin, Slavic, Swedish, Teutonic
Defender; Truth; Faith
Girl/Female
Hebrew American Biblical
Avenged. Judged and vindicated. Famous bearer: biblical Dinah, Jacob's only daughter.
Boy/Male
British, English
From the Island Near the Clearing
Girl/Female
French
Rising.
Boy/Male
Hindu, Indian
Desirable
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi
Lord of the Sky
Boy/Male
Muslim/Islamic
Lion
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
n.
Family; relations; household.
n.
The act of relating or telling; also, that which is related; recital; account; narration; narrative; as, the relation of historical events.
a.
Of or pertaining to creation.
n.
A person connected by cosanguinity or affinity; a relative; a kinsman or kinswoman.
v. t.
Respect; relation; reference.
n.
A blood relation.
a.
Indicating or specifying some relation.
v.
Relation; reference; regard.
a.
Expressing the type, structure, relations, and reactions of a compound; graphic; -- said of formulae. See under Formula.
a.
Relating to the reason; not physical; mental.
n.
Reference; respect; regard.
n.
The state of being related or of referring; what is apprehended as appertaining to a being or quality, by considering it in its bearing upon something else; relative quality or condition; the being such and such with regard or respect to some other thing; connection; as, the relation of experience to knowledge; the relation of master to servant.
n.
A rational being.
n.
The carrying back, and giving effect or operation to, an act or proceeding frrom some previous date or time, by a sort of fiction, as if it had happened or begun at that time. In such case the act is said to take effect by relation.
a.
Having relation or kindred; related.
n.
Corresponding relation.
a.
Having reason, or the faculty of reasoning; endowed with reason or understanding; reasoning.
n.
The act of a relator at whose instance a suit is begun.
a.
Agreeable to reason; not absurd, preposterous, extravagant, foolish, fanciful, or the like; wise; judicious; as, rational conduct; a rational man.
n.
Connection by consanguinity or affinity; kinship; relationship; as, the relation of parents and children.