What Is The RDBMS Database: A Complete Learning Guide

Mamta Mitali

Jun 17, 2021
What Is The RDBMS Database: A Complete Learning Guide

In a world where the amount of data produced grows exponentially, the amount of data produced in the last few years is likely to be more than ever in human history, and as a result, there is a dire need for any organisation to effectively gather, manage, store, and reuse data. This is where the need for a Database system comes in.

A DBMS together with a database forms the database system.

There are different types of Database systems available in the market. Each of these has its own set of benefits and drawbacks. In this blog, we will talk about RDBMS Database.

Understanding relational database management systems (RDBMS) will help us gain access to, communicate with, and work with data. It will make storing and filtering alternative data much faster and more reliable.

What is RDBMS?

A database management system (DBMS) that includes a Structured Query Language (SQL) application programming interface is known as a relational database management system (RDBMS). It's a database management system in which data is arranged and accessible based on relationships between data elements. Tables are used to express relationships between data elements in a relational database. A table of rows and columns can be used to represent a relational model. 

A relational database is made up of the following major components:

  1. Table

  2. Record or Tuple

  3. Field or Column name or Attribute

  4. Domain

  5. Instance

  6. Schema

  7. Keys

How is RDBMS different from DBMS?

  • RDBMS uses tables to store data, whereas DBMS uses files to store data.

  • Single users are supported by DBMS, whereas multiple users are supported by RDBMS.

  • Client-server architecture is not supported by DBMS, although it is supported by RDBMS.

  • The software and hardware requirements for DBMS are limited, however the requirements for RDBMS are vast.

  • Data redundancy is frequent in DBMSs, although keys and indexes do not allow data redundancy in RDBMS.

The working of RDBMS

In a relational database management system (RDBMS), data is represented as tuples (rows). There are several tables in it, each with its primary key. Data in RDBMS may be accessible quickly thanks to a collection of well-organized tables. 

A persistent database's basic functions are described by the CRUD cycle. Create, Read, Update, and Delete is the acronym for CRUD.  (Retrieve may be used instead of Read on occasion.) The data life cycle is also described by these functions.


Key Features Of RDBMS

Dependency in the Form of a Clearly Defined Relationship

Users can create defined relationships between tables using an RDBMS. Users will be able to see a complete picture of data definitions as a result of this. For example, on your electricity bill, you might see Readings, Payable amount, Due Date, and so on. Depending on the situation, all of these might be split off and reassembled.

Data and analysis are not separated

We can now store our data from our analysis. For e.g. to communicate with peers, you need to handle multiple versions of Excel. Each file must contain several alternative versions of data and analysis. However, in RDBMS, we can now utilise SQL instructions to separately update and examine data. This way, RDBMS can ensure that your colleagues are using the most up-to-date data and analysis from a single database.

The RDBMS category includes the majority of well-known DBMS software:

  • Oracle Database

  • MySQL

  • Microsoft SQL Server and IBM DB2 are just a few examples.

Although some of these tools can manage non-relational databases, they are usually used to handle relational databases.

Apache HBase, IBM Domino, and Oracle NoSQL Database are examples of non-relational databases. Other DMBS applications that support NoSQL, but do not fall under the RDBMS group, manage these types of databases.

Popular Relational Database Management Systems:

Depending on which RDBMS you're using, the SQL syntax may differ slightly. Here's a quick rundown of the most popular RDBMS:


The most widely used open source SQL database is MySQL. It's most commonly used for web application development and is frequently accessed through PHP. 

MySQL's key advantages:

It is simple to use, affordable, and dependable (it has been available since 1995). It also has a huge developer community that can assist with queries. 


It has been known to have poor scaling performance because open source development has languished since Oracle took ownership of MySQL, and it lacks some complex capabilities that developers may be accustomed to.


PostgreSQL’s key advantages:

It’s a free and open source SQL database. It is commonly used in the building of online applications. 

It is simple to use, affordable, and dependable, and it has a strong developer community. It also has certain extra capabilities, like support for foreign keys, without requiring complicated configuration. 


It can be slower than other databases like MySQL in terms of performance. It's also a little less well-known than MySQL.

Oracle Database

Oracle’s Database key advantages:

It is owned by Oracle Corporation, and the code is not open source. It is designed for large-scale applications, such as those in the banking industry.

Because Oracle offers a powerful combination of technology and extensive, pre-integrated business applications, including crucial functionality created expressly for banks, Oracle applications are used by the majority of the world's top banks. 


Unlike its open source competitors, it is not free to use and can be extremely expensive.

SQL Server 

It is owned by Microsoft. The code is open sourced, just like Oracle DB. It is mostly used in large enterprise applications. Microsoft provides a free entry-level version called Express, but as your application scales, it can become very expensive.


It is an open source SQL database that is widely used. It has the capability of storing a whole database in a single file. One of the biggest benefits is that you don't have to connect your database to a server because all of the data may be saved locally. For databases in cell phones, PDAs, MP3 players, set-top boxes, and other electronic devices, SQLite is a popular choice.


Choosing the right type of database and examining the leading RDBMS/DBMS/other products is dependent on the specific need of your project. As a result, you will have a better understanding of your requirements and which database technology will optimise your system.

We hope you got a better understanding of “what RDBMS is” by reading this article!

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