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5 min readJun 5, 2022

7 ETL OPEN SOURCE TOOLS, DATA INTEGRATION EASY

On the previous occasion, we have discussed data warehouse, data warehouse design, and the relationship between data warehouse and BI and ETL. In this article, we will discuss Open Source ETL Tools for Data Integration. Before entering into the discussion, let’s first look at what ETL is.

What is ETL?
ETL is a process that consists of Extract, Transform, and Load. The extract is the process of selecting and retrieving data from one or more data sources and reading or accessing the selected data.

The process can use a query or one of the ETL tools. Transform is a process in which the data that has been taken in the extract process will go through a cleansing process. Besides changing the data from the original form into a form that suits the needs of the data warehouse.

In addition, the load is the last process to enter data into the final target, namely into the data warehouse. In other words, ETL is a set of processes that must be passed in the formation of a data warehouse.

So the purpose of ETL is to collect, filter, process, and combine relevant data from various sources to be stored in a data warehouse.

There are several ETL tools that we can use. The following are some examples of open source ETL tools that we can use for data integration, as follows:

Apache Kafka

Apache Kafka is one of the most widely used message service/broker or publish subscribe applications today.

Recently, kafka itself has added a streaming feature to its platform. Kafka is now under apache which means that kafka is an open source platform.

Apache Kafka is a publish-subscribe messaging system. Messagging system is a system that can be used to send messages between processes, applications and servers.

Apart from that, the main task of kafka is to use it to build pipelines and streaming data applications in real-time, and run them as clusters on one or more servers that can span more than one data center.

Kafka cluster stores stream records in categories that are topics, and each record consists of a key, value, and timestamp.

Apache Nifi

Apache Nifi is open source software for automating and managing the flow of data between systems. Very reliable in processing and distributing data. In addition, its use is easier because there is a web-based user interface available to create, monitor, and control data flow.

Pentaho Data Integration (PDI)

Pentaho is a collection of Business Intelligence (BI) applications that are growing rapidly and are free open source software (FOSS) that run on the Java platform.

While Pentaho Data Integration is software from Pentaho useful for ETL (Extraction, Transformation and Loading) processes.

The use of PDI is for data migration, cleaning data, loading from files to databases or vice versa in large volumes. PDI provides a graphical user interface and drag-drop components that make it easy for the user.

Talend Open Studio

Quoting from softbless.com, Talend is an open source for data integration.

Usually Talend is used for integration between operational systems, ETL (extract, transform and load), and migration of data by multiple sources.

In addition, Talend will assist you in managing all aspects of the data extraction, data transformation, and data loading stages efficiently and effectively.

Talend is complete with the following features:

Facilitate data modeling by using a drag and drop design tool
There are more than 900 components that can connect all data sources
String Manipulation
Automatic Lookup Handling
Ability to run extract, transform and load
With the open source application for Data Integration, you can implement it directly by migrating your data to Talend Data Integration, this software package has provided a complete solution for building, deploying, and managing data integration services.

Apart from providing everything you need to implement open standards-based data migration services and data management services.

Talend Data Integration includes enterprise-wide features such as load balancing, automatic failover, and tools for cross-team collaboration, as well as round-the-clock technical support from data integration experts on Talend’s applications.

Apache Airflow

Apache Airflow is a platform for creating, scheduling, and monitoring programming workflows.

So that when Workflow is defined as code, it becomes more maintainable, versionable, testable, and collaborative. Apache Airflow makes workflows directed acyclic graphs (DAGs) tasks.

Stitch

Stitch is the first open-source platform in the cloud that lets you move data quickly. Also, stitch is a simple and extensible ETL built for data teams.

Apache Camel

Apache Camel is an open-source ETL tool that helps you integrate various data-consuming or generate systems quickly.

After listening to the explanation above, maybe you are interested in using one of the open source tools above.

This is a short article about Open Source ETL Tools for Data Integration. May be useful.