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SQL is a declarative language used to manage data, especially in a relational database management system (RDBMS). It consists of many types of statements, such as Data Query Language (DQL), Data Definition Language (DDL), Data Control Language (DCL), and Data Manipulation Language (DML).
A database is an organized collection of data or a type of data store based on a database management system (DBMS). Learn about the history, design, functions and classification of databases and DBMSs, from navigational to NoSQL, and their applications.
MySQL is a software that organizes data into tables and allows users to interact with it using SQL. It is free and open-source under GPLv2, and also available under proprietary licenses. It runs on many platforms and is used by many web applications and websites.
A database schema is the structure of a database described in a formal language supported by a relational database management system. Learn about the elements, constraints, and examples of database schemas, as well as the Oracle database specificity.
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 to maintain relational databases is a relational database management system (RDBMS).
A query language is a computer language used to make queries in databases and information systems. Learn about the different types of query languages, such as database query languages, information retrieval query languages, full-text, Boolean, structured, natural language, and more, and see examples of each type.
A database engine is the software component that a DBMS uses to manipulate data. Learn about different types of database engines, storage engines, data structures, data orientation and indexing.
MongoDB is a cross-platform, open-source NoSQL database that uses JSON-like documents with optional schemas. It supports ad-hoc queries, indexing, replication, sharding, load balancing, file storage, aggregation, and more features.