Updated March 10, 2023
Definition of Talend ETL
Here ETL stands for extract transform and load, this helps the business to gather the data. It plays an important role in the data integration strategies. By the help of ETL we can easily load the data from the different locations and loads them into the single centralized location. Also it helps us to handle the different types of data together. ETL follows an process which includes colleting of data from different sources, refine this data collected, at the end it deliver the data to the different warehouse. By the help of this we can easily migrate our data to different destinations, sources, and tools. In short, ETL helps and play an important role in business intelligence to collect the data. In this article we will see how it works in detail for better understanding with more clarity by the article ends for the beginners.
What is Talend ETL?
As we already discussed ETL is a data integration strategy which helps us to collect data, as the name suggest to extract, transform and load data which means it perform the following operations which as briefly describe below for better understanding see below;
1) extract: In this step it tries to extract the important information form the different sources or destinations. This may include different type of handle. So by this we can easily handle different data type together.
2) Transform: As the name suggest, in the second it helps us to transform the data, which include migration of data to different destinations, tools etc.
3) load: As the name suggest here, this we can say the last step for ETL which helps us to load the data to the centralized location to use.
These steps are the very short description of ETL and what are the major components involved in it. In the coming section of the tutorial we will have more understanding about the working of ETL in detail with detailed explanation of every phase of the talend ETL.
Prerequisites Talend ETL
In this section, we will go to have detailed understanding of using talend ETL before getting started with it, for we have to focus on the two main properties which is memory and software requirement. So let’s get started with the usage see below;
1) Memory requirement
2) Software requirement
Let’s discuss each of them in detail for better idea;
Memory Requirement: for this, we can consider the memory space and disk usage, follow below table to verify it;
| Disk Space | 3 GB |
| Memory usage | 4 GB recommended, 3 GB Minimum |
Software Requirement: For most of the Talend products please try to follow the below software configuration which is required see below table for better understanding;
| Type | Operating System | Version | Processor |
| Supported | Apple OS X | 10.12
10.11 10.10 |
64 bit
64 bit 64 bit |
| Recommended | Linux Ubuntu | 16.04 LTS | 64 bit |
| Recommended | Windows | 7 | 64 bit |
Recommended Linux Ubuntu 16.04 LTS 64 bit
Recommended Windows 7 64 bit
In addition to this, we have to install Java and MySQL, but two have to take care of the version for both its order to work it properly. Let’ stake a look at the installation of the java and MySQL in detail see below;
Java Installation
a) Download java 8 from the below-mentioned link:
URL: https://www.oracle.com/java/technologies/downloads/
b) Select the configuration as per your system and start downloading it.
c) Setup the environmental variable to your system by adding the Java path to it. For this we can follow the below URL to make it fast;
URL: https://help.talend.com/r/SapKmX6pp8gru_C2cwvbvA/NVLCvoEkS9amEXrg~fOVNw
MySQL:
Properly installed the MySQL database and create a database with a default name. Many tutorials can be found online for this setup.
Optional Requirement: optionally you can download the 7-Zip to extract the folder when we download it initially.
Talend ETL Tool & Talend ETL Examples
This is a Talend tool which is used for data integration and one of most popular tool we have that is viable in the market. By the help of this we can easily mange the process of ETL that is starting from the initial designing to the end when the data is loaded. To use this tool we have Eclipse development environment, by this, we can easily map our data to the source and destination system.
Let’s take a simple example by which we can easily load data from excel to MySQL let get started see below;
1) We are going to extract the data from the excel file
2) Once the data extraction part is done we can transform it by applying the filter for the data we want in our database.
3) At the last we will have to load this data inside the new database we have in the system.
So in this example, we are going to do this by using the ETL tool so let’ get started see below;
Example
Step 1: first we have to create a new job and from the pallet, we have to drag and drop the below components;
a) MysqlCOnnection
b) FileExcelInput
c) Replicate
d) filterROW
e) MySqlOutput
Step 2: See below diagram and connect all above component as it is ;
Diagram:
Step 3: Now we have to specify the MySql connection property to the editor by going to the property of the MysqlCOnnection component.
Step 4: in the fileExcelInpt ere we have to mention our file path from which we want to take the data and load it to the database.
Step 5: After that, we have to sync the columns for replicate component
Step 6: Repeat this process for the entire row that need to be filter out.
Step 7: now for MySqlOutput we have to use the ‘existing connection.
Step 8: one all this steps are done we can now run the job and execute it for result.
Conclusion
The article gives the whole idea about the Talend ETL, which can be used to transform our data, and et the business intelligence out of that. It is a key to the data integration process which helps organizations to collect data from different sources, go thought the whole article in detail for better understanding.
Recommended Articles
This is a guide to Talend ETL. Here we discuss Definition, What is Talend ETL, tools, and examples with code implementation. You may also have a look at the following articles to learn more –
