The relationship between DB, DBMS and DBS is: DBS includes DB and DBMS. DBS refers to a database system. A database system generally consists of four parts: 1. Database; 2. Hardware; 3. Software; 4. Personnel.
The relationship between DB, DBMS and DBS: DBS includes DB and DBMS.
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Analysis:
DB: refers to datebase (database)
DBS: refers to datebase systerm (database system)
DBMS: refers to datebase mangement systerm (database management system)
The database is a warehouse where data is stored, and the database management system is used to manage the database . Among them, database system is a general term that includes databases, database management systems, database managers, etc., and is the largest category.
Database system generally consists of 4 parts:
(1) Database (DB)
Database refers to long-term storage in the computer, organized, and can be A collection of shared data. The data in the database is organized, described and stored according to a certain mathematical model. It has small redundancy, high data independence and easy scalability, and can be shared by various users.
(2) Hardware
Various physical devices that make up a computer system, including external devices required for storage. The hardware configuration should meet the needs of the entire database system.
(3) Software
includes operating system, database management system and application programs.
Database management system (DBMS) is the core software of the database system. It is a system software that works with the support of the operating system and solves how to organize and store data scientifically and how to obtain and maintain data efficiently. .
(4) Personnel
There are mainly 4 categories. The first category is system analysts and database designers, the second category is application programmers, the third category is end users, and the fourth category is database administrators.
The specific responsibilities of the DBA include: specifying the information content and structure in the database, determining the storage structure and access strategy of the database, defining the security requirements and integrity constraints of the database, monitoring the use and operation of the database, Responsible for database performance improvement, database reorganization and reconstruction to improve system performance.
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