Introduction to ETL and Data Warehouse Concepts

The ETL tool executes ETL strategy. The ‘ETL’ stands for “Extract, Transform, and Load”. ETL is generally connected with Data Warehousing ventures. Big organizations always need to move application data starting with multiple source systems to common data warehouse.

Example of source systems: ERP, Databases, File systems, Salesforce, Mainframes, etc.

The ETL tool executes ETL strategy. The ‘ETL’ stands for “Extract, Transform, and Load”. ETL is generally connected with Data Warehousing ventures. Big organizations always need to move application data starting with multiple source systems to common data warehouse.

Example of source systems: ERP, Databases, File systems, Salesforce, Mainframes, etc.

Example of target system / Data warehouse: Teradata, Hadoop, etc.

There are abundant sources for ETL to extract data. This data is then transformed into a mode and from there it is loaded into a data warehouse. There is high a demand in market for professionals who are efficient in this process. Even most of the professionals working on other testing technologies are switching to ETL testing. Hence it is important to gain knowledge about ETL testing along with skills. This requires proper guidance. So when you want ETL training in Pune, you should go for a leader in this domain who is Komal Arora who conducts training in institute Technogeeks, Pune, Maharashtra.

Technogeeks offers Classroom, hands on training. The course is Practically Oriented. The real time examples are given to candidates. It helps candidates to develop skills to apply their theoretical and practical knowledge in projects.

The trainers are working professionals in IT companies. They do personal assessment of every candidate and mentor every candidate personally.

Introduction to ETL and DW Concepts

• What is Data Warehousing?
• Differences : OLTP and Data Warehousing
• Why we need two separate solution for real time and warehouse
• EXTRACTION, TRANSFORMATION, and LOADING of data

Data Marts

• Need and usage of data marts and types of data marts
• Dependent DM & Independent DM

DATA WAREHOUSING LIFE CYCLE

Types of Tables:

• Fact Table
• Dimension table

Schemas:

Fact Table, Star Schema, Snowflake Schema, Fact Constellation Schema

Informatica PowerCenter Tool

• Administrator Module
• Advance Workflow Module
• Command Reference
• Designer Module
• Performance Tuning
• Transformation Modules
• Repository Modules
• Transformation Language Reference

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.

ETL Tool Implementation and Testing Concepts

Basic Concepts of SQL (Select, Update, Insert, Delete, types of joins, nested query, etc.)

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.

ETL Tool Architecture

• How ETL tool works and what is the basic need of ETL tools in the market
• Similarities between ETL tools and SQL
• Why we use ETL Tools if SQL is the only standard which any Database or Data Warehouse can use
• How ETL Tools work at back end
• Different ETL Tools
• What types of tasks tester performs on ETL for testing purpose

Coding and testing process in different transformation rules

• SAMPLE Loading from source to target
• Transformation of – SORTER, FILTER, EXPRESSION, JOINER, UNION, AGGREAGATOR, SEQUENCE GENERATOR, SQL.

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

Other benefits:

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

If you have some technical queries or want to take some Free session / Seminar on ETL Testing first to get proper idea about real time stuff and what would be your roles and responsibilities when you will start working on ETL Testing in real time projects then simply I can suggest to don’t register or pay any fee directly.

Just join Free Demo session in Technogeeks and get all these details like a Technical counseling free of cost. To book your Demo seat on Weekends you may contact via any medium mentioned below:

Contact Details:-

You can register your name for free Demo on: 8600998107 / 7028710777

Email: contact@technogeekscs.co.in

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