DBMS Interview Questions For Freshers & Experienced

  • Sharad Jaiswal
  • 13th Nov, 2019

DBMS aka Database Management System also called a Database + Management System. The database is a group of data and Management System is a set of programs to handle the database. In short, it is defined as a technology solution to store and retrieve the data from databases. The components of DBMS like Software, Database engine, Query processor, Processors, etc. helps to facilitate the functionalities, for instance, adding, deleting, updating, retrieving the data. The DBMS also offers some amazing benefits such as Data integration, data security, data sharing, uniform management and many more.

To know more about DBMS, its pros and cons, then check our online interview questions. We have collected the best questions that will also help you to crack any interviews. Well, I want to mention that it is a hot topic in interviews, so make sure to prepare it properly. Let's start now!

DBMS Interview Questions
Updated ON

13th Nov, 2019

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Sharad Jaiswal

DBMS Interview Questions

DBMS vs RDBMS. Which is better?

Data is stored as a file. RDBMS stores data in the form of tables.
It is the collection of data and the set of programs for managing the databases. It is the database systems used for managing the relationships between the tables.
DBMS supports a single user only. It supports multiple users.
DBMS does not support Normalization RDBMS can be Normalized.
DBMS is basically for small organizations and used to handle a small amount of data. DBMS is designed to manage a large amount of data.
DBMS does not support a distributed database. RBMS offers support for distributed databases.
File system, XML, Windows Registry, etc. are some examples of DBMS. Some examples of RDBMS are MySQL, Oracle, SQL Server, etc.

Pros of DBMS:

  • Reduction of Redundancies: One of the astonishing features of the DBMS is that it controls the data. It avoids the undesirable duplication of the data which as a result diminish the entire mass of data storage needed. It also reduces the additional processing to trace the required data in a huge data set. Another advantage of dodging duplication is the removal of the inequality present in the excess data.
  • Accessing the Network: An RDBMS includes a server daemon, a software program which is specially designed to catch request sent over a network. It helps in the communication between the database and the database clients. There is no need to log in to the computer system to use or access the database. It not only helps the users with the convenience but also with the security layer for the database. Many developers use this network access facility to build web apps and desktop tools to cooperate with the database.
  • Security: Data is very important to an organization and may be confidential. It has to be clear that this confidential data should not be accessed by an unauthorized person. The DBA assures that proper authentications are followed, including proper procedures for access to the DBMS and extra checks before allowing access to the sensitive data. For the safety of the data and operation, different levels of security are implemented.
  • Language: RDBMS maintains the language SQL. It is because the syntax of SQL is simple. It executes phrasing and keywords in the English language which helps in making it easier to learn and interpret. An RDEMS is also known to add functions, non-SQL database-specific keywords, and features to this SQL awesomeness.
  • Reduced updating errors and increased consistency: Another main advantage of the RDBMS is that it increases consistency and updating errors. In its operation, the database offers end-user consistency. Moreover, there are several events of data errors within a database which creates consistency.
  • Better Decision making: If we have quality information, then it is obvious that we can take better decisions. This same happens in the case of DBMS that let the users take quick decisions very easily. The data transformation tools generate valuable information from underlying data and empower developers to make good choices.

Cons of DBMS:

  • Cost: Maintaining and setting up a database is not as much easier as it sounds. The expenses are relatively high and one of the disadvantages of relational databases. Moreover, to set up relational databases, special software is required and this could cost a fortune.
  • Update Information: For non-programmers, they would need to implement several products to set up this database. It might not be an easy task to update all the information and finally get the program running. As large firms need a more vigorous database, so it becomes important for them to get external help from an expert programmer to develop a relational database implementing SQL.
  • Complexity: The requirement of functionality from a good DBMS makes it an extremely complex piece. The developers, end-users, designers and database administrators must understand the functionality to have benefits of it.
  • Large size: The complexity of DBMS makes it a large piece of software. So. to fulfill the functionality, the size of DBMS gets bigger which occupies a large space of disk space and makes the program slow.

About Author :

  • Author of DBMS Interview Questions

    Sharad Jaiswal

    Sharad Jaiswal is Sr. Web Developer from Noida area. He have rich experience in PHP, Angular Js, React, javascript and Node .If you any query or project on these programming you can drop your enquiry in comment section.

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