"database-engine." YourDictionary, n.d. Web. 09 December 2018. <https://www.yourdictionary.com/database-engine>.
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database engine - Computer Definition
Software that stores and retrieves data in a database. It may be a self-contained program or the part of a database management system (DBMS) that performs the storage and retrieval. The actual reads and writes are performed by the operating system. See DBMS and database manager.