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In the realm of computing, a database serves as a structured repository for electronically stored and accessed data. While smaller databases can be managed within file systems, larger databases typically require the infrastructure of computer clusters or cloud storage. The design of databases encompasses both formal methodologies and practical considerations, addressing aspects such as data modeling, efficient data storage and retrieval, query languages, security measures, and distributed computing concerns, including support for concurrent access and fault tolerance.

A pivotal component in managing databases is the database management system (DBMS), which serves as the intermediary between end users, applications, and the database itself. The DBMS facilitates the capture, storage, retrieval, and analysis of data, providing essential administrative functionalities. The combined ensemble of the database, the DBMS, and associated applications constitutes a database system. Often, the term "database" is used colloquially to refer to any of these components individually or collectively.

Database management systems can be categorized by the database models they support, with relational databases emerging as dominant players in the 1980s. Relational databases organize data into rows and columns within tables, with SQL (Structured Query Language) serving as the standard for data manipulation and retrieval. The 2000s saw the rise of non-relational databases, commonly known as NoSQL databases, which employ diverse query languages and cater to different data management needs.