Introduction to DBMS

Shivani Kumari
Last Updated: May 13, 2022

Introduction

Before learning about the software, we should first understand what a Database is.

Database

A database is a collection of data organized as tables, schemas, views, reports, etc. It allows efficient retrieval, insertion, or deletion of the data. 

For example, College data is organized about students, faculties, courses, staff, etc.,  bank data is collected about customers, account names, transactions, etc. This data management helps in easy retrievals, insertion, and deletion of data.

DBMS

A database management system (DBMS) is software that allows you to organize (create, retrieve, update, and manage) data in a database. The DBMS accepts an application's request for data and informs the operating system to give the requested data.

Users can design their databases using a database management system (DBMS). It serves as a link between the data and the software application.

-Source

Some popular DBMS Software

  • MySQL
  • PostgresSQL
  • Oracle
  • LibreOffice Base
  • Microsoft Access

Application of DBMS

  • Educational and Corporate: To maintain the records of all the clients/employees/students.
  • Banking: Preserving the details of the customer's bank account and every transaction.
  • Airlines: To store the schedule of every flight or details of passengers, etc.
  • Sales: Keeping the record of products, purchases, customers, etc.


DBMS is generally helpful when information needs to be stored, retrieved, or updated.

Purpose of using Database Systems

  • To create software applications in lesser time.
  • Data security and integrity.
  • Several users can access data simultaneously and data recovery after a crash.
  • To use a declarative query language that is user-friendly.

Advantages of DBMS

DBMS has many benefits. Some of these are:

  • Data independence: Application programs should be as free or independent from data representation and storage aspects as possible. A database management system (DBMS) can abstractly represent the data to protect application code from such details.
  • Data integrity and security:  database management system (DBMS) provides a framework for enforcing data privacy and security regulations more effectively.
  • Efficient data access: A database management system (DBMS) employs a combination of advanced principles and techniques for effectively storing and retrieving data. This feature becomes critical when the data is stored on external storage devices.
  • Backup and recovery mechanism: During failures, the DBMS backup and recovery system help to avoid data loss and inconsistency.

Components of DBMS

  • Software: DBMS is a software system that acts as a management console or interfaces for interacting with and managing databases.
  • Data: A database management system (DBMS) contains operational data, database entries, and metadata as a resource for performing the required functions.
  • Procedures: Procedures can be thought of as instructions for utilizing the DBMS. Users can use the established guidelines to help them develop, alter, manage, and process databases.
  • Database languages: These are DBMS components that allow you to access, change, store, and retrieve data from databases, as well as specify database structure, manage user access, and execute other database management tasks. Data Definition Language (DDL), Data Manipulation Language (DML), Database Access Language (DAL), and Data Control Language are examples of DBMS languages (DCL).
  • Users: Users can be like DB administrators, System developers, or database users.
  • Database application: Database application can be Departmental, Personal, organization, or Internal.

Frequently Asked Questions

Q1: What are the four types of DBMS?
Ans1: These are:

  • Relational database.
  • Object-oriented database.
  • Hierarchical database.
  • Network database.


Q2: What are the disadvantages of DBMS?
Ans2: The cost of Hardware and Softwares of a DBMS is very high. Also, most database management systems are complex, so training to use the DBMS is required.

Q3: What are the examples of the database?
Ans3: MySQL, Microsoft Access, FileMaker Pro, Microsoft SQL Server, Oracle Database, and dBASE are some examples of popular database software or DBMSs.

Q4: What is the function of DBMS?
Ans4: Database management system (DBMS)  allows you to arrange data in a database. Concurrency, security, backup and recovery, integrity, and data descriptions are some of the functions of a database management system.

Key Takeaways

In this article, we learned about DBMS. We learned that a database management system (DBMS) is software that allows you to organize (create, retrieve, update, and manage) data in a database. 

We then learned about:

  1. Database
  2. DBMS
  3. Some popular DBMS Software
  4. Application of DBMS
  5. Purpose of using DBMS
  6. Advantages of DBMS
  7. Components of DBMS


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