Thursday, 10 November 2016

data base management system

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A database management system (DBMS) is system software for creating and managing databases. The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage data.

Popular types of DBMSes

Popular database models and their management systems include:
Relational database management system (RDMS)  - adaptable to most use cases, but RDBMS Tier-1 products can be quite expensive.
NoSQL DBMS - well-suited for loosely defined data structures that may evolve over time. 
In-memory database management system (IMDBMS) - provides faster response times and better performance.
Columnar database management system (CDBMS) - well-suited for data warehousesthat have a large number of similar data items.
Cloud-based data management system - the cloud service provider is responsible for providing and maintaining the DBMS.

Advantages of a DBMS

Using a DBMS to store and manage data comes with advantages, but also overhead. One of the biggest advantages of using a DBMS is that it lets end users and application programmers access and use the same data while managing data integrity. Data is better protected and maintained when it can be shared using a DBMS instead of creating new iterations of the same data stored in new files for every new application. The DBMS provides a central store of data that can be accessed by multiple users in a controlled manner.

download dbms pdf :-
https://drive.google.com/file/d/0B_6kK5kFli0vOEhLdVY5Xy1KdXM/view?usp=sharing

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