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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
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
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
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
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
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
Organized collection of data in computing
development of database technology can be divided into three eras based on data model or structure: navigational, SQL/relational, and post-relational. The two
Database
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
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
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
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
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
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
Proprietary database management system
became generally available in Oracle Database 23ai. JSON Relational Duality exposes the same data both as relational tables and as JSON documents through
Oracle_Database
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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
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
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
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
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
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
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)
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
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)
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
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
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
Marker used in SQL databases to indicate a value does not exist
the creator of the relational database model, E. F. Codd, SQL null serves to fulfill the requirement that all true relational database management systems
Null_(SQL)
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
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
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
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)
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
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
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
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
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
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
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
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)
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
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
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
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)
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
systems. Examples of early database applications with Web interfaces include amazon.com, which used the Oracle relational database management system, the
Database_application
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
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 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
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
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
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
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
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
Relational Test Vehicle) was the world's first relational database management system that could handle significant data volumes. It was a relational query
IBM Peterlee Relational Test Vehicle
IBM_Peterlee_Relational_Test_Vehicle
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
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
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)
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
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
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
SQream is a relational database management system (RDBMS) that uses graphics processing units (GPUs) from Nvidia. SQream is designed for big data analytics
SQream_DB
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
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
Relational database theory concept
In relational database theory, a functional dependency (FD) is constraint between two attribute sets, whereby values in one set (the determinant set)
Functional_dependency
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
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
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
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
Relational database management system
Paradox is a relational database management system currently published by Corel Corporation. It was originally released for MS-DOS by Ansa Software, and
Paradox_(database)
Maintenance of data over its entire life-cycle
includes topics such as referential integrity and entity integrity in a relational database or correctly ignoring impossible sensor data in robotic systems.
Data_integrity
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 management system that primarily relies on main memory for computer data storage
in-memory database developed by Redis Ltd. Comparison of relational database management systems Distributed data store Embedded databases In-memory processing
In-memory_database
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
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
Relational database software by Huawei
GaussDB is a proprietary enterprise-grade distributed AI-native relational database management system developed by Huawei which launched on May 15, 2019
GaussDB
Fine-Grain Locking and Cascaded Deletes to the World's Best Relational In-Memory Database Server, Press Release, vol. 8, Enea AB, archived from the original
List_of_in-memory_databases
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
Data storage paradigm
within the database. Key-value databases differ from the better known relational databases (RDB). RDBs pre-define the data structure in the database as a series
Key–value_database
Technique used in relational databases
representing nested set collections (also known as trees or hierarchies) in relational databases. It is based on Nested Intervals, that "are immune to hierarchy reorganization
Nested_set_model
RELATIONAL DATABASE
RELATIONAL DATABASE
Boy/Male
Indian
Talker, Speaker, Rational
Boy/Male
Assamese, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Friend; Relation
Boy/Male
Tamil
Rational
Girl/Female
Muslim
Relation, Way, Sake
Girl/Female
German, Greek
Noble; Kind; Rational
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Animated; Rational
Boy/Male
Hindu, Indian
Relation; Connection
Boy/Male
Hindu, Indian
Leader; Relation
Boy/Male
Indian
Relation
Boy/Male
Hindu, Indian
Relation
Boy/Male
Muslim
Talker, Speaker, Rational
Girl/Female
Hindu, Indian
Rational
Boy/Male
Hindu
Rational
Boy/Male
Tamil
Jasevaraj | ஜஸேவாராஜ
Heart of relation
Jasevaraj | ஜஸேவாராஜ
Boy/Male
Tamil
Rational
Girl/Female
Hindu, Indian
Friendship; Good Relation
Girl/Female
Hindu, Indian
Relation
Boy/Male
Hindu
Rational
Girl/Female
Hindu, Indian
Rational
Boy/Male
Tamil
Relation
RELATIONAL DATABASE
RELATIONAL DATABASE
Boy/Male
Hindu, Indian
Cream
Boy/Male
Indian, Sanskrit
Truthful
Girl/Female
Muslim
Rays of light, Devote of God, More radiant
Boy/Male
Biblical
The wood of the man.
Girl/Female
Hindu
Woman of dreams
Boy/Male
Indian
Surgeon, Name of tabaree
Boy/Male
Hindu
Boy/Male
Czech
Good fame.
Male
Egyptian
, a priest and scribe of the temple of Amen Ra.
Boy/Male
Arabic, Muslim
Wisdom
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
RELATIONAL DATABASE
n.
The act of relating or telling; also, that which is related; recital; account; narration; narrative; as, the relation of historical events.
n.
Family; relations; household.
a.
Expressing the type, structure, relations, and reactions of a compound; graphic; -- said of formulae. See under Formula.
n.
The act of a relator at whose instance a suit is begun.
a.
Having relation or kindred; related.
a.
Having reason, or the faculty of reasoning; endowed with reason or understanding; reasoning.
n.
Corresponding relation.
v. t.
Respect; relation; reference.
n.
Connection by consanguinity or affinity; kinship; relationship; as, the relation of parents and children.
a.
Agreeable to reason; not absurd, preposterous, extravagant, foolish, fanciful, or the like; wise; judicious; as, rational conduct; a rational man.
a.
Of or pertaining to creation.
n.
A person connected by cosanguinity or affinity; a relative; a kinsman or kinswoman.
n.
A rational being.
a.
Indicating or specifying some relation.
n.
Reference; respect; regard.
a.
Relating to the reason; not physical; mental.
v.
Relation; reference; regard.
n.
A blood relation.
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.
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.