The relationship between database, database system and database management system is: database system includes database and database management system. A database system is a computer system with a database, which generally consists of a database, a database management system (and its development tools), related hardware, software and various personnel.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The relationship between the three is: the database system includes the database and the database management system.
A database is an organized and shareable data collection stored in a computer for a long time. The data in the database is organized, described, and stored according to a certain data model. It has low redundancy and high data efficiency. Independence, sharing and easy scalability.
The database management system is the core component of the database system. It is a layer of data management software between the user and the operating system, and is the interface between the user and the database.
A database system is a computer system with a database, generally consisting of a database, a database management system (and its development tools), related hardware, software and various personnel. The data model is the core of the database.
Related expansion:
The database is a warehouse that stores data. It has a large storage space and can store millions, tens of millions, or hundreds of millions of pieces of data. However, the database does not store data arbitrarily, there are certain rules, otherwise the query efficiency will be very low. Today's world is an Internet world full of data, filled with a lot of data. That is, this Internet world is the data world. There are many sources of data, such as travel records, consumption records, web pages browsed, messages sent, etc. In addition to text type data, images, music, and sounds are all data.
A database is a computer software system that stores and manages data according to a data structure. The concept of database actually includes two meanings:
(1) Database is an entity, which is a "warehouse" that can reasonably store data. Users store transaction data to be managed in this "warehouse". "Data" " and "library" are combined into a database.
(2) Database is a new method and technology for data management. It can organize data more appropriately, maintain data more conveniently, control data more closely and utilize data more effectively.
As the most important basic software, the database is the cornerstone to ensure the stable operation of the computer system.
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