What is Database Management System?

A database is an organized collection of data (information) that is organized so that it can be easily accessed, managed, and updated. The basic function of the database is to make data management easy. A computer database typically consists of an aggregation of data records or files, which contain information about sales transactions or interactions with specific customers.

A database also called an electronic database or any collection of information of data is specifically organized for rapid search and retrieval by computers. The database is structured to facilitate storage, retrieval, modification, and deletion of data with various data-processing operations. A DatabaseManagement System  (DBMS) brings out the information from the database in response to queries. SQL Server is a relational database management system developed by Microsoft. It is a software product that is used to store and retrieve the data requested by others. Before studying SQL Server, first, you must understand what SQL is. It is a special programming language designed to handle data in the relational database management system and a database server is a computer program that provides database services to other programs or computers, as defined by the client-server model. Thus, a SQL Server is a database server that implements the Structured Query Language (SQL).  MySQL and Oracle are the most popular programming languages used by the Database Management System.

Types of DBMS:-

• Hierarchical
• Network
• Relational
• Object-oriented

Hierarchical Database

In such a database, the data is organized in a tree structure with nodes as (parent/child), the nodes are connected through links.

Network Database

In this type of database, data is represented as a record and the relationship between the data is shown as a link.

Relational Database

This database is also known as a structural database in which data is stored as tables in rows and columns.

Object-oriented Database

A database in a relational database cannot be distributed to multiple servers’. This led to the creation of an object-oriented database management system. In this model, the user can define the method of their data access. This is the future database model.

MAIN CHARACTERISTICS OF DBMS:-

• Self-Describing nature
• Program Data Independence
• Supports Multiple Data View
• Sharing Multiple Users

Self-describing nature

The Database management system has a self-describing nature because it not only contains the database itself but also the metadata which defines and describes the data and relationships between tables in the database. This information is used by the DBMS software or database users when needed.

Program database independence

In DBMS, we have Program database independence because the structure of the data files is stored separately in the system catalog.

Support multiple data view

A database has many users, each of which requires a different view or perspective.

Sharing multiple users

DBMS allows multiple users to access the database at the same time.

FUNCTIONS OF DATABASE MANAGEMENT SYSTEM

• Managing Database
• Updating the Data
• Data Modeling
• Processing Query
• Security of Data
• Concurrency Control
• Crash Recovery

ADVANTAGES OF DATABASE MANAGEMENT SYSTEM

• Data Redundancy
• Data Sharing
• Data Consistency
• Data Integration
• Data Security
• Backup and Recovery

DISADVANTAGES OF DATABASE MANAGEMENT SYSTEM

• Cost of Implementation
• Database Failure
• Effort of Data Transfer

AppTechnoServices is the best institute for database management system training in Delhi with the most experienced professionals who are working in this field for more than 8 years. We are aware of industry needs and we are offering the DBMS/ Oracle DBA course in Delhi in a more practical way. AppTechnoServices offers DBMS/ Oracle/ SQL course in the classroom as well as online also. We have designed the DBMS syllabus to match the real world requirements for both beginner level to advanced level. AppTechnoServices Certification is accepted by all major MNCs around the world. It increases the value of your resume and with the help of this certification, you can get higher posts in leading MNCs of the world.        

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