Talend Data Integration Tutorial | Talend Tutorial For Beginners | Talend Online Training | Edureka

Agenda
01 What Is Talend?
02 Talend Open Studio
03 TOS Installation
04 TOS GUI
05 Components & Connectors
06 Metadata & Context Variables
07 Demo

What Is Talend?

It is considered to be the next-generation leader in cloud and big
data integration software
What Is Talend?
Talend is an open source software integration platform/vendor
which offers data integration and data management solutions
Its headquarters are located in Redwood City,
California

Talend Features
FUTURE PROOF04
NATIVE CODE03
OPEN SOURCE02
UNIFIED PLATFORM01

Talend Products
Various Products
offered by Talend

Talend Open Studio

Talend Open Studio
Talend Open Studio is an open
source project based on Eclipse
RCP and provides an interactive
and user-friendly GUI
Used extensively for integration
between operational systems, ETL
processes and data migration
TOS can easily combine, convert
and update data present at
various sources
TOS acts as a code
generator which converts all the
underlying programs in Java at
the backend

Talend Open Studio - Architecture
This is a basic representation of the
TOS architecture which represents
how jobs are executed at the back end

TOS Installation

TOS Installation
1. Go to https://www.talend.com/download
2. Click on Download
Free Tool

TOS Installation
3. Again Click On Download Free tool to get the zip file

TOS Installation
4. Once you have downloaded the zip file, extract it
5. Now go into the extracted folder and double click on TOS_DI-linux-gtk-x86_64 file to start the installation

TOS Installation
6. Let the installation finish
7. Select “Create a new project ” and
specify a name to it
8. Click on finish to build a project

TOS Installation
9. Once the project is built following window will open. Close the welcome tab to open up the workspace

TOS Installation
10. Now you should be able to see the TOS main page

TOS GUI

TOS GUI
TOS GUI is mainly divided into four major sections:
Repository
Design Window
Palette
Configurational Tab

TOS GUI - Repository
Design Window
Palette
Configurational Tab
Repository
The Repository collects all the technical items and displays them in a tree structure within
Talend
It acts as a central store for all the elements necessary for any job or business model
From the Repository, you can access various Business Models, Job Designs, reusable routines,
documentation & database connections

Repository
Palette
Configurational Tab
Design Window
WORKSPACE
Here you can lay down the designs of your Jobs as well as the business models
Designer Tab
This tab opens by default when a Job is created which displays the Job in a graphical mode
Code Tab
This tab helps you in visualizing the code and highlight the possible language errors

Design Window
Configurational Tab
It is docked at the top of the design workspace to help you draw the
model corresponding to your workflow needs.
You can drag and drop various technical components or shapes into
your design workspace
There are more than 800 components in Talend
Palette
Repository

Design Window Job Tab
The Job tab provides various information about the current Job in the designer window including
name, version, creation date and time etc.
Context Tab
The Context tab is used to set context variables and different contexts on which they will be used
Component Tab
The Component tab displays all the parameters that are required to configure a component
Configurational Tab
Repository
Palette
Run Tab
The Run tab displays the progress of the execution of a Job. The logs shown here includes any start,
end and error messages.

Components & Connectors

Components In Talend
A component is a functional piece which is used to perform a single operation in Talend
At the backend, a component is a snippet of Java code that is generated as a part of a Job
These Java codes are automatically compiled when the Job is saved
A Talend Job may include one or more components depending on the requirement

Component Families
This family provides Talend
components which cover various
needs like opening connections
to database , reading and writing
tables, committing transactions,
performing rollback for error
handling etc.
Databases
This family groups together
various components which read
and write data in all types of files
like Delimited, Positional, XML,
Excel etc. It also helps in
performing various tasks like
unarchiving, deleting, copying,
comparing etc.
File
This family includes all of the
components that help in
accessing information from the
Internet, through various means
like Web services, RSS flows,
SCP, MOM, Emails, FTP etc.
Internet

This family, groups together all
the components which are
dedicated to catch log
information and handle Job
errors.
Logs & Errors
This family gathers different
miscellaneous components
covering various needs like the
creation of sets of dummy data
rows, buffering data, loading
context variables etc.
Misc
This family includes various
components which help to
sequence or orchestrate tasks
and processing Jobs or
SubJobs etc.
Orchestration
Component Families

Connectors
Talend provides various types of connections to enable the communication between the components
Row
Iterate
Trigger
Link
The Row connection deals with the actual data flow
• Main
• Lookup
• Filter
• Rejects
• ErrorRejects
• Output
• Uniques/Duplicates
• Multiple Input/Output
The Iterate connection is used to perform a loop on files contained in a directory, on rows contained
in a file or on the database entries
The Trigger connection is used to create a dependency between Jobs or SubJobs which are triggered
one after the other according to the trigger’s nature. Two types of Triggers are:
• Subjob Triggers
▪ OnSubjobOK
▪ OnSubjobError
▪ Run if
• Component Triggers
▪ OnComponentOK
▪ OnComponentError
▪ Run if
The Link connection can be used only with the ELT components

Metadata & Context Variables

Metadata
• Metadata in Talend is the definitional data which basically provides
information about other data that all are managed within Talend
Studio
• In the Repository Metadata, you can store metadata about the
various data sourcesthat you may use
• While developing any project you can use metadata in your Jobs,
just by dragging an object from the repository and dropping it in
the workspace

Context Variable
✓ Context variables are the user-defined parameters used by Talend which are passed into a Job at the runtime
✓ These variables may change their values as the Job promotes from Development to Test and Production
environment.
These context variables are embedded in the Job and are configured much like any
other component parameters in the Context Tab below the Job Designer
These are created when context variables are used or needed in more than one Job.
They are centrally maintained in the repository allowing them generally accessible
External context variables are those context variables which are held in an external file
and loaded into the Studio job at the run-time
Embedded
Repository
External

Demo

Talend Data Integration Tutorial | Talend Tutorial For Beginners | Talend Online Training | Edureka

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