Database Management System (DBMS)

DBMS

A DBMS (Database Management System) is a collection of programs that enables you to store, modify and extract information from a database.

In simple words we can say that the DBMS is a type of system which manages the data in database like to add new data, modify the data and delete the existing data. DBMS can be used in many places like Banking to manage the records of the account and transaction, Schools to manage the record of the student and their fees, Payroll Management System to manage the details related to the employees like, attendance, salary, etc, and there are many more field we can use the facility DBMS.

Advantages of DBMS

1. Stop data redundancy and inconsistency – Data redundancy is a situation created within a database in which the same piece of data is present at two separate places.

Here are two tables in a database in which a common field is present in the table i.e. “Student_Name”, so if you use this type of database structure then this database is called data inconsistent and data redundant database.

Note – Student_Id columns are key fields which are used to relate the tables for data sharing.

Data redundancy means repetition or duplication of data.

Data inconsistency is a situation when similar data is stored at different location.

2. Data Sharing – Facility to use data resources with multiple users from a central location is known as Data sharing. In DBMS all data is stored at a central location from where users can easily access it simultaneously.

3. Security – Database stores valuable or sensitive data. DBMS provides some security feature that helps to prevent unauthorized data access. DBMS provides security for data by ensuring that only authorized users are able to access the database.

4. Data Integrity – Data integrity means the unification of data. In other words the term data integrity refers to the accuracy and consistency of data by making each field unique as required by user.

5. Data Backup and recovery – DBMS also provide data backup facility and recovery when there is in need for portable data.

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