Relational database

A relational database is a digital database based on the relational model of data, as proposed by E. F. Codd in 1970.[1]A software system used to maintain relational databases is a relational database management system (RDBMS). Virtually all relational database systems use SQL (Structured Query Language) for querying and maintaining the database.[2]

Relational model

This model organizes data into one or more tables (or "relations") of columns and rows, with a unique key identifying each row. Rows are also called records or tuples.[3] Columns are also called attributes. Generally, each table/relation represents one "entity type" (such as customer or product). The rows represent instances of that type of entity (such as "Lee" or "chair") and the columns representing values attributed to that instance (such as address or price).

Other Languages
Esperanto: Rilata datumbazo
Bahasa Indonesia: Basis data relasional
Simple English: Relational database
slovenčina: Relačná databáza
srpskohrvatski / српскохрватски: Relacijska baza podataka