Database
A database is an organized collection of data that is stored electronically and managed so it can be accessed, updated, and analyzed efficiently. Databases are used in many systems—such as banking, online shopping, and apps—to keep information consistent and retrievable. Common types include: - Relational databases (e
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Database (en-US)
A database is an organized collection of data that is stored electronically and managed so it can be accessed, updated, and analyzed efficiently. Databases are used in many systems—such as banking, online shopping, and apps—to keep information consistent and retrievable. Common types include: - Relational databases (e.g., tables with rows and columns) - Document databases (e.g., JSON-like records) - Key-value stores (e.g., fast lookups by an identifier) - Graph databases (e.g., relationships between entities) Databases typically support operations like searching, filtering, sorting, and joining related data. They also use mechanisms for security (e.g., permissions), reliability (e.g., backups), and performance (e.g., indexing). A “database” may refer to the data itself and/or the database management system (DBMS) that runs it.
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How databases are used
People and applications interact with databases through queries (often using SQL for relational systems) or APIs. Good database design aims to reduce duplication, maintain data integrity, and support the kinds of questions users need to answer.
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Key terms
- DBMS: software that manages the database - Schema: the structure/definition of data - Index: a structure that speeds up queries - Backup/restore: processes to protect against data loss
Client endpoint
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