Aggregation in DBMS: Types, Example, Techniques and Importance: Aggregation can be defined as a procedure for combining multiple entities into a single one. In database management, it is a design system performed to model relationships between a group of entities and another relationship. Its main motive is treating these relationships as a single one. This process is mainly performed when the entities don’t look good and need to be aggregated to get desired results.

Also See: Decomposition in DBMS? Types, Advantages, Properties, Issues

There is lots of confusion among the community regarding the aggregation process that we will try to uncover in this post. We will give brief information about Aggregation in DBMS along with its advantages, features, and other essential information. Check out the entire article for ensuring that no detail gets missed.

Aggregation in DBMS: Types, Example, Techniques and Importance

Why is Aggregation important in DBMS?

The main motive of Aggregation is to summarize the data results for database management. So, let’s have a look at what major jobs are performed by Aggregation in DBMS below:

  • It is very helpful for maintaining the collection, processing, and presentation of data making this tool an essential component of the database management system.
  • Aggregation assists in briefing data from various resources to boost the value of information available in it.
  • It is useful for finding the origin of data and creating an audit trail.
  • This technique works in situations where the entry model relationship can’t be applied adequately.
  • It ensures all the entities in the database management system are utilized according to their full potential.

Also See: Structure of DBMS: Users and Interfaces with Diagram

What are the main types of data aggregation in DBMS?

The data aggregation can be done according to date that let the characteristics display over a period of months, years, etc. Check out the major kinds of data aggregation in detail below:


This tool is used for combining the various specified data for creating a total value.


The average value of the particular data is fully computed by this command.


It is used for showing the highest value for every category in the database management system.


It is used for providing the lowest value for every category in the database management system.


The total number of data entries is counted for all the categories available in the database management system.

Also See: Pagination in SQL Server, MySQL and Oracle with Examples

What are the data aggregation techniques in DBMS?

We have mentioned different data aggregation techniques in detail below:

In-Network Aggregation

It is a general procedure where the information is gathered and routed using a multi-hop network. This impressive technique is the cornerstone of the database management system.

 Tree-Based Approach

The Aggregation from developing an aggregation tree is defined with the help of a tree-based approach. It is a very important technique for performing database management procedures brilliantly.

 Multi-Path Approach

The partially aggregated data is transferred to a particular parent mode during the multi-path approach. All the nodes are sent to many different inputs in this type of Aggregation.

Also See: Specialization in DBMS

Cluster-Based Approach

This technique is utilized for collating a great sort of data on the complete network. The cluster-based approach is equipped with a cluster head chosen from various cluster members.

What are the major examples of Aggregation in DBMS?

There is no way someone could understand the Aggregation properly without checking a real example. Just think there is raw data that needs to be aggregated over a certain amount of time for giving various characteristics like maximum, average, sum, etc.

The availability of aggregated data will assist in analyzing insights regarding different resources or a cluster of resources. It is considered through particular functions where the values of various rows can ensure better results.

Let’s assume there is a sample database where the users have to count the number of movies for every genre. The Aggregation will give great assistance in collecting data as a single entity.

Also See: Generalization in DBMS with Example

Which are the few popular data aggregation companies?

There is a pretty convincing role played by data aggregation nowadays as most companies recognize how important rich information is. In fact, it has become a key part of any company’s strategy these days. Have a look at the names of a few companies who have utilized this opportunity and become the top provider of data aggregation services globally:

Mobius Services

The company is a very popular name in the data aggregation market with a presence in a variety of countries, like the United States, India, and the United Kingdom. They have an awe-inspiring portfolio of services that consist of digital marketing, data enrichment, and many more. Their clientele is very broad in different industries, like retail, real estate, and travel & hospitality.

Plaid and Quovo

The next company that offers exceptional data aggregation services is Plaid and Quovo. It is one of the few organizations that has received lots of mainstream attention from the media. It is a popular data aggregator serving a variety of companies in various industries related to banks and finance.

Also See: Examples of Database Management Systems


Yodlee is a well-known company giving access to different tools and services. They offer very comprehensive coverage to various clients, like Personal Capital, Microsoft, ING, and many more.

Aggregation in DBMS- Frequently Asked Questions

Q. Is Aggregation useful in DBMS?

It is very useful for performing calculations in different rows to create a single value in the database management system.

Q. What is the common example of Aggregation in daily life?

The phone numbers present in our mobile phone are the perfect example of Aggregation. It can be referred to by various names.

Q. Is Aggregation used in ER diagram?

Yes, it is used for expressing relationships among relationships in ER diagrams.

Also See: What is Schedule in DBMS?

Q. Is association different from Aggregation?

Association shows the relationship between objects that use each other, while Aggregation is the relationship having a collection of certain objects.


Aggregation is a useful process for ensuring every entity in a database system is working as per its full potential. It will be very hard for trivial entities to stay operative without this tool. The Aggregation in DBMS is greatly helpful in boosting the functionality of the complete system. The availability of advanced database technologies boosts efficiency but also improves the reliability of DBMS.

Also See: Metadata in DBMS

Sumit ThakurWhat Is DBMSAggregation in DBMS: Types, Example, Techniques and Importance: Aggregation can be defined as a procedure for combining multiple entities into a single one. In database management, it is a design system performed to model relationships between a group of entities and another relationship. Its main motive is treating these...Let's Define DBMS