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16-11-2017, 07:29 AM

DBMS technical publications free download

jaseela123d · 16-11-2017, 09:32 AM

A database management system (DBMS) is a system software for creating and managing databases. The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage data. A DBMS makes it possible for end users to create, read, update and delete data in a database. The DBMS essentially serves as an interface between the database and the end users or application programs, which ensures that the data is organized in a consistent manner and is easily accessible.

The DBMS handles three important things: the data, the database engine that allows access, block and modify the data, and the database schema, which defines the logical structure of the database. These three fundamental elements help to provide simultaneity, security, data integrity and uniform administration procedures. Typical database management tasks supported by the DBMS include change management, performance monitoring / adjustment, and backup and recovery. Many database management systems are also responsible for automatic rollbacks, reboots and recovery, as well as the registration and audit of the activity.

The DBMS is perhaps the most useful to provide a centralized view of data that can be accessed by multiple users, from multiple locations, in a controlled manner. A DBMS can limit what data the end user sees, as well as how that end user can see the data, providing many views of a single database schema. End users and software programs are free to have to understand where the data is physically located or what type of storage medium it resides because the DBMS handles all requests.

The DBMS can offer independence of logical and physical data. That means it can protect users and applications from the need to know where the data is stored or to worry about changes in the physical structure of the data (storage and hardware). Whenever programs use the application programming interface (API) for the database provided by the DBMS, developers will not have to modify programs simply because changes have been made to the database.

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