DBMS : BASIC FOUNDATION KNOWLEDGE CREATED BY DHARMENDRA YADAV

DBMS Tutorial:: basic foundation knowledge ::          

DBMS Tutorial

DBMS Tutorial provides basic and advanced concepts of Database. Our DBMS Tutorial is designed for beginners and professionals both.

Database management system is software that is used to manage the database.

Our DBMS Tutorial includes all topics of DBMS such as introduction, ER model, keys, relational model, join operation, SQL, functional dependency, transaction, concurrency control, etc.

What is Database

The database is a collection of inter-related data which is used to retrieve, insert and delete the data efficiently. It is also used to organize the data in the form of a table, schema, views, and reports, etc.

For example: The college Database organizes the data about the admin, staff, students and faculty etc.Using the database, you can easily retrieve, insert, and delete the information.

Database Management System

  • Database management system is a software which is used to manage the database. For example: MySQL, Oracle, etc are a very popular commercial database which is used in different applications.
  • DBMS provides an interface to perform various operations like database creation, storing data in it, updating data, creating a table in the database and a lot more.
  • It provides protection and security to the database. In the case of multiple users, it also maintains data consistency.

DBMS allows users the following tasks:

  • Data Definition: It is used for creation, modification, and removal of definition that defines the organization of data in the database.
  • Data Updation: It is used for the insertion, modification, and deletion of the actual data in the database.
  • Data Retrieval: It is used to retrieve the data from the database which can be used by applications for various purposes.
  • User Administration: It is used for registering and monitoring users, maintain data integrity, enforcing data security, dealing with concurrency control, monitoring performance and recovering information corrupted by unexpected failure.

Characteristics of DBMS

  • It uses a digital repository established on a server to store and manage the information.
  • It can provide a clear and logical view of the process that manipulates data.
  • DBMS contains automatic backup and recovery procedures.
  • It contains ACID properties which maintain data in a healthy state in case of failure.
  • It can reduce the complex relationship between data.
  • It is used to support manipulation and processing of data.
  • It is used to provide security of data.
  • It can view the database from different viewpoints according to the requirements of the user.

Advantages of DBMS

  • Controls database redundancy: It can control data redundancy because it stores all the data in one single database file and that recorded data is placed in the database.
  • Data sharing: In DBMS, the authorized users of an organization can share the data among multiple users.
  • Easily Maintenance: It can be easily maintainable due to the centralized nature of the database system.
  • Reduce time: It reduces development time and maintenance need.
  • Backup: It provides backup and recovery subsystems which create automatic backup of data from hardware and software failures and restores the data if required.
  • multiple user interface: It provides different types of user interfaces like graphical user interfaces, application program interfaces

Disadvantages of DBMS

  • Cost of Hardware and Software: It requires a high speed of data processor and large memory size to run DBMS software.
  • Size: It occupies a large space of disks and large memory to run them efficiently.
  • Complexity: Database system creates additional complexity and requirements.
  • Higher impact of failure: Failure is highly impacted the database because in most of the organization, all the data stored in a single database and if the database is damaged due to electric failure or database corruption then the data may be lost forever.                

Comments

Post a Comment

Popular posts from this blog

KNOWLEDGE ABOUT SOFTWARE TESTING ::: PUBLISHED BY DHARMENDRA YADAV

Image
Software Testing Tutorial Software testing tutorial provides basic and advanced concepts of software testing. Our software testing tutorial is designed for beginners and professionals. Software testing is widely used technology because it is compulsory to test each and every software before deployment. Our Software testing tutorial includes all topics of Software testing such as Methods such as Black Box Testing, White Box Testing, Visual Box Testing and Gray Box Testing. Levels such as Unit Testing, Integration Testing, Regression Testing, Functional Testing. System Testing, Acceptance Testing, Alpha Testing, Beta Testing, Non-Functional testing, Security Testing, Portability Testing. What is Software TestingSoftware testing is a process of identifying the correctness of software by considering its all attributes (Reliability, Scalability, Portability, Re-usability, Usability) and evaluating the execution of software components to find the software bugs or errors or defects. Software
Read more

BASIC INFORMATION ABOUT AMAZON WEB SERVICES :: PUBLISHED BY DHARMENDRA YADAV

Image
AWS Tutorial AWS tutorial provides basic and advanced concepts. Our AWS tutorial is designed for beginners and professionals. AWS stands for Amazon Web Services which uses distributed IT infrastructure to provide different IT resources on demand. Our AWS tutorial includes all the topics such as introduction, history of aws, global infrastructure, features of aws, IAM, Storage services, Database services, etc. What is AWS? AWS stands for  Amazon Web Services . The AWS service is provided by the Amazon that uses distributed IT infrastructure to provide different IT resources available on demand. It provides different services such as infrastructure as a service (IaaS), platform as a service (PaaS) and packaged software as a service (SaaS). Amazon launched AWS, a cloud computing platform to allow the different organizations to take advantage of reliable IT infrastructure.                                       . Uses of AWS A small manufacturing organization uses their expertise to expand
Read more

KNOWLEDGE ABOUT CYBER SECURITY ::: PUBLISHED BY DHARMENDRA YADAV

Image
What is Cyber Security? The technique of protecting internet-connected systems such as computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks is known as cybersecurity. We can divide cybersecurity into two parts one is cyber, and the other is security. Cyber refers to the technology that includes systems, networks, programs, and data. And security is concerned with the protection of systems, networks, applications, and information. In some cases, it is also called  electronic information security  or  information technology security . Some other definitions of cybersecurity are: Cyber Security is the body of technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, theft, damage, modification or unauthorized access.".                                                                Cyber Security is the set of principles and practices designed to protect our computing resources and online
Read more