A database is a "warehouse that organizes, stores, and manages data according to a data structure." It is a collection of organized, shared, and uniformly managed data that is stored on a computer for a long time.
A database is a collection of data that is stored together in a certain way, can be shared with multiple users, has as little redundancy as possible, and is independent of the application. It can be regarded as an electronic file cabinet—a place where electronic files are stored. Users can add, query, update, delete, etc. the data in the file.