What is a layer of data management software that sits between the user and the operating system?

What is a layer of data management software located between the user and the operating system?

DBMS is a layer of data management software located between the user and the operating system.

Database Management System (Database Management System) is a large-scale software that manipulates and manages databases. It is used to establish, use and maintain databases, referred to as DBMS. It provides unified management and control of the database to ensure the security and integrity of the database. Users access data in the database through DBMS, and database administrators also perform database maintenance through DBMS.

It can support multiple applications and users to use different methods to create, modify and query the database at the same time or at different times. Most DBMS provide data definition language DDL (Data Definition Language) and data manipulation language DML (Data Manipulation Language) for users to define the schema structure and permission constraints of the database and implement operations such as appending and deleting data.

DB是database的缩写也就是数据库
DBS是Database System的缩写也就是数据库系统
DBMS是Database Management System的缩写，它是操作数据库和管理数据库的一个系统，比如mysql、sqlserver等都是属于数据库管理软件

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