ETL Testing

ETL Testing with concept of ETL Development  in Informatica and DataStage 

Course Description:

This Online Informatica ETL Testing and Development will present you with a complete idea about ETL testing and what we do to test ETL process. In our Online training course curriculum will covers ETL Testing Data Warehouse Testing Introduction, ETL Testing Using Informatica PowerCenter Tool and more. The primary objective of ETL testing is to ensure that the Extract, Transform & Load functionality is working as per the business requirements and in sync with the performance standards. Basics of ETL, Informatica & ETL testing, Understanding ETL testing specific to Informatica, Classification of ETL testing in Informatica.

Introduction to ETL and DW Concepts

• What is Data Warehousing?
• Differences between OLTP and Data Warehousing
• Why we need two separate solution for real time and warehousing?

â–º Data Acquisition

Data Extraction

• How to extract data from several sources and load into same target table?

Data Transformation

• How to perform transformation logics on data?

Data Loading

• How to load data into final target table?

â–º Data Marts
Need and usage of data marts and types of data marts

• Dependent DM
• Independent DM 

â–º Data Warehousing Life Cycle  

Types of Tables

• Fact Table
• Dimension table 

Schemas

• Star Schema
• Snowflake Schema
• Fact Constellation Schema 

â–º SCD (Slowly Changing Dimensions)
Different types of SCD’s which developer develops and a tester has to test as per different types of data needs of clients. We implement SCD-1 and  SCD-2 in class to show the implementation part more transparently and explain SCD-3 to define how to work on limited historical data as well which is used sometimes or types:

• TYPE1 SCD
• TYPE2 SCD
• TYPE3 SCD 

â–º ETL Tool Implementation and Testing Concepts

Basic Concepts In Sql (CRUD Operations)

• How to design frequently used testing queries to validate the data in source and target for both of the reasons?
• Data Quality and Correctness to ensure that expected data came into the final and mediator target tables or not. 

Overview of ETL Tool Architecture

• How ETL tool works and what is the basic need of ETL tools in the market?
• What are the similarities between ETL tools and SQL?
• Why we use ETL Tools if SQL is the only standard which any Database or Datawarehouse can use?
• How ETL Tools work at back end?
• Different ETL Tools in the market
• What types of tasks tester performs on ETL for testing purpose?
• Informatica PowerCenter (Leading tool in the market) 

Coding and testing process in different transformation rules

• Sample Loading from source to target
• Sorter Transformation
• Filter Transformation
• Expression Transformation
• Joiner Transformation
• Union Transformation
• Aggregator Transformation
• Sequence Generator Transformation
• SQL Transformation

We provide this practice as additional benefit to you so that you can implement jobs by yourself to understand that what developers do in real time which you have to test. 

Testing Techniques in ETL

• Minus Query
• Count Query
• Union Query
• Join Query 

Informatica PowerCenter

• How developers work on PowerCenter?
• Different components of PowerCenter
• Tasks developed in different components 

Data Stage

• What is Data Stage?
• Differences between Informatica PowerCenter and Data Stage
• Components of Data Stage
• Differences between ETL development process in Informatica and Data Stage  

Additional benefits

• Interview Questions
• Resume preparations
• Real-time Scenarios examples and solution discussion
• Assignments

Class delivery

• Live Interactive classes with expert

Delivery Methodology

• We are using an experiential delivering methodology that blends theoretical concepts with hands-on practical learning to ensure a holistic understanding of the subject or course.

Course duration: 25 hrs