The document provides a summary of an individual's experience working as a Software Engineer specializing in data warehousing and ETL processes using Informatica. It outlines 3 years of experience developing mappings to extract, transform and load data from various sources into staging and data warehouse databases. Specific projects are described involving building data marts for semiconductor manufacturing, sales and distribution, and promotional sales. Responsibilities included requirements gathering, mapping development, debugging, testing and monitoring ETL workflows.

1. Veeranjaneyulu Boya
Veera.etl898@gmail.com +91-8985553864
Summary:
 Having 3+ Years of experience in data warehousing using informatica ETL tool .
 Main areas of expertise are analyzing, developing the data warehousing projects.
 Experience in Development of mappings using needed Transformations using Informatica tool.
 Experience in the Data Warehousing using Data Extraction, Data Transformation and Data
Loading.
 Used ETL process to Extract, Transform and Load the data into stage area and data warehouse.
 Preparing the Documentation for the mappings according to the Business Requirements.
 Sound Knoeledge on SQL.
 Good Knowledge on Data Warehousing concepts like Star Schema, Dimensions and Fact tables.
 Optimizing Informatica Mappings and Sessions to improve the performance.
 Extensively used Informatica client tools – Source Analyzer, Warehouse designer, Mapping
designer, Mapplet Designer, Informatica Repository Manager and Informatica Workflow Manager
 Excellent problem solving skills with strong technical background and good interpersonal skills.
Quick learner and excellent team player, ability to meet deadlines and work under pressure
Technical Skills:
ETL Tool : Informatica 7.x/8.x/9.x,Toad
Database : Oracle 9i/10g/11g
Operating System : Windows, Unix/Linux
Education: Bachelor’s Degree in Information Technology May 2012
Professional Experience:
Working as Software Engineer in Tech Mahindra, Bangalore.
Professional Summary:
Project 1 : CSM Data Mart
Client : Chartered Semi Conductor Manufacturing
Environment : Informatica 9x, SQL, TOAD, UNIX
Period : Aug 2014 – Present
Project Description:
Chartered Semi conductor Manufacturing Company is One of the worlds top dedicated semi conductor
manufacturing company which provides innovative solutions for manufacturing ICs that power today’s
consumer communications and computing products.
This project is aimed to reduce the manufacturing cost and improve the sales by identifying the key factors
like the total sales revenue on a monthly and quarterly basis on the region and sales amount.
The decision support system is focused on analyzing the entire business process in order to provide critical
information like daily revenue, total sales, goals information on employees and new plans to company for
developing business intelligences system based on B.Os and information products.

2. Role & Responsibilities:
 Understanding various Business requirements
 Developed the Informatica mappings to load the data into staging tables from multiple data sources
such as SQL Server, Oracle and text files
 Developed mappings using Informatica Power Center Designer to transform and load the data from
source systems to Staging and Staging to target database.
 Developed ETL mappings in Informatica PowerCenter Designer using various transformations like
Aggregator, Lookup, Filter, Expression, Router, Update Strategy, and Sequence Generator.
 Successfully Loaded Data into target from various source systems like Oracle Database, Flat files ,XML
etc.
 Created Mapplets and used them in different Mappings for maintaining the standards.
 Designed the ETL processes using Informatica to load data from Oracle, Flat Files, XML Files to target
Data Warehouse.
 Developed Slowly Changing Dimension Mappings for Type 1 SCD and Type 2 SCD.
 Responsible for Performance Tuning at the Source level, Target level, Mapping Level and Session Level.
 Extensively worked with various lookup caches like Static Cache, Dynamic Cache, and Persistent Cache.
 Used debugger to test the mapping and fix the bugs.
 Used Session Task, Command Task, and Event Raise/Event Wait, Email task etc. to develop Workflows.
 Identified proper partitioning methods for performance enhancements.
Project 2
Project : Sales and Distribution
Client : Avnet Sales and Distribution
Environment : Informatica 9x, Oracle 11g, Windows XP
Period : Nov 2013 to Aug 2014
Project Description:
Avnet sales and distribution is one of the leading distributor of electronic equipment and other and a major
producer of specialty Electronics products. This Project involves the creation of a Data Warehouse for the
Sales Reporting System. Data from Operational Source System is extracted, transformed and loaded into data
warehouse using Informatica. This Data Warehouse supports Business Objects applications that are in
production, administering the BO activities, and granting the necessary DB access rights and privileges for the
BO users
Responsibilities:
 Responsible for Extracting, Transforming and Loading data from Oracle, Flat files
 Analyzing the data Sources, Designing Transformations, Creating Mappings.
 Evaluated the Business requirements to develop Informatica mappings.
 Developed mappings using transformations like Lookup, Sequence Generator, Aggregator, Expression ,
Filter, Router and Update Strategy.
 Worked with SCD tables using Lookup and Update Strategy transformations.
 Transformed the data to the target and done testing whether the accuracy data is captured or not.
 Prepared and tested possible test cases as per requirement.

3. Project 3
Project : Promotional Sales Data Mart (PSDM).
Client : H.M.S Grocery store, UK
Environment : Informatica Power center 8x, Oracle 9i
Period : Sept 2012 to Nov 2013
Project Description:
This Data Mart is based on the advertisement Management System and the Retail Sales System. The main
object of this Data Mart is to provide integrated information on Retail Sales System and promotional sales
metrics. The Transformation System and the Warehouse are both hosted on Windows NT servers using Oracle
8i as RDBMS. Promotional Sales Fact, with several dimensions namely Customer Product, Store, Location,
Promotion, and Time. Aggregate tables are built to improve query performance. The Objective of this project
is to create a data mart for the analysis of Sales information in the company. This project involved designing
and creating a data mart to fulfil their business study & analysis requirement.
Responsibilities:
 Extracting of external data from the sources like flat files and relational databases.
 Created number of mappings required with respect to the mapping documents.
 Used the transformations like Source Qualifier, Aggregator, Lookup, Filter, Sequence Generator, Router
in the mappings.
 Transformed the data to the target and done testing whether the accurate data is captured or not.
 Worked extensively on databases to create views, stored procedures, and functions.
 Schedule and monitor the sessions work flows using informatica work flow manager and work flow
monitor, daily basis.
 Identify the bugs in existing mapping by analyzing the data flow, evaluating the transformations and
fixing the bugs.
 Responsible for test case writing and testing.