The document provides a summary of Praveena Chandrasekaran's professional experience and skills. She has over 7 years of experience in data warehousing, business intelligence, and ETL development using Informatica. Some of her roles included developing ETL mappings and workflows to load data from various sources into targets, performing testing, and leading a project as an onsite coordinator. She has strong skills in SQL, databases, data modeling, Informatica, and UNIX scripting.

1. Praveena Chandrasekaran
Email: cpraveena2007@gmail.com
Professional Summary:
• 7+ years of IT experience in all stages of SDLC Analysis, Design, Development, Implementation,
Testing and Production Support of Data Warehousing, Business Intelligence & Optimization and
Data Integration Solutions using Informatica Powercenter 9.x,8.x7.x/Power Exchange.
• Knowledge in Full Life Cycle development of Data Warehousing.
• Experience in developing end to end BI solutions for enterprise level data warehouse.
• Created UNIX shell and Perl scripts to run the Informatica workflows and controlling the ETL
flow.
• Strong experience in coding using SQL, PL/SQL Procedures/Functions, Triggers and Packages.
• Proficient in the Integration of various data sources with multiple databases like Oracle11g
/Oracle10g/9i, MS SQL Server, IBM DB2 VSAM files and Flat Files into the staging area, ODS,
Data Warehouse and Data Mart.
• Have extensively worked in developing ETL program for supporting Data Extraction,
transformations and loading using Informatica Power Center.
• Experience in performance tuning of Informatica Sources, Targets, Mappings and Sessions.
Highly proficient in processing tasks, scheduling sessions, import/export repositories, manage
users, groups, associated privileges and folders.
• Proficiency in developing SQL and database designs with various databases like Oracle, SQL
Server, etc.
• Experience in scheduling of ETL jobs using Crontab, Control-M.
• A good team player, self- motivated and possess excellent analytical and problem solving skills.
• Understand the business rules completely based on High Level document specifications and
implements the data transformation methodologies.
• Expertise in Relational, Dimensional Data modeling, Star schema modeling, Snowflake modeling
using CA Erwin.
• Maintained outstanding relationship with Business Analysts and Business Users to identify
information needs as per business requirements.
• Independently perform complex troubleshooting, root-cause analysis and solution
development.
• Ability to meet deadlines and handle multiple tasks, decisive with strong leadership qualities,
flexible in work schedules and possess good verbal / written communication skills.
• Strong with relational database design concepts and slowly changing dimensions.
Technical Expertise:
Databases Oracle 12c/11g/10g/9i/8i/7.3, SQL SERVER 2005/2008, DB2, MS Access, IBM DB2
UDB 8.0/7.0, DB2/400, Flat File Systems, XML Files,Teradata.
GUI Forms 10g/6i/4.5, Reports 10g/6i/2.5, Oracle Discoverer 6i,Crystal Reports 10,
Java,
Tools and
Utilities
TOAD, SQL*Plus, SQL Navigator, Erwin, TK-Prof, UTL_File Packages, Business
Objects6.1, SQL*LOADER, TKProf, Stats pack, Informatica, Load Runner, Quality
Center, Autosys, Crontab, TWS.
Web ASP,HTML,DHTML,JAVA, JSP

2. Technologies
Programming
Languages
C, C++, Unix shell scripting, PL/SQL,MY SQL
ETL Tools Informatica –Power Center 6.x/7.x/8.x/9,x, Power Exchange ,ODI (Oracle Data
Integrator),Power center Data Transformation studio.
Data Modelling Relational modeling, Dimensional Data modeling- Star schema, Facts & Dimensions
using CA Erwin etc.
Version Controls SVN, IBM Rational Clear Case/RTC
OS Windows NT/XP/2000, Linux, Sun Solaris, HP-Unix,
Education, Awards, Appreciations & Certificates:
• Bachelor of Science, Mathematics, Madras University, Tamil Nadu, India – May 2007
• Netezza Bronze Certified.
• Retail Domain Certified.
• Received ‘Beyond Performer’ for outstanding performance.
• Successful completion and live implementation of the Pilot 1 project.
• Successful completion and live implementation of the SP6 project.
• Appreciated as ‘Dedicated and Successful Team ‘from Client.
Professional Experience:
Client: Motorola Mobility LLC, Chicago IL Apr ’15 – Till Date
Project: Global EComm – Brazil
The Motorola Global eCommerce objective is to implement a global direct-to-consumer (D2C)
eCommerce sales channel. This eCommerce channel will sell Motorola CTO phones, Legacy Sales Model,
Companion Products, and service products through the Motorola.com websites in Brazil. This is an
international expansion of the existing U.S. eCommerce channel and will integrate with Motorola's
current business systems and web technology infrastructure being used for the U.S. model.
Role: Sr. ETL Informatica Lead
Responsibilities:
• Extensive hands on experience in ETL domain. Have Designed, Developed and maintained ETL
(Data Extraction, Transformation and Loading) mappings using Power Center -Designer to
extract the data from source systems to target systems.
• Executed, scheduled workflows using Informatica Cloud tool to load data from Source to
Target.
• Created mappings using transformations like Source Qualifier, Aggregator, Expression, lookup,
Router, Filter, Update Strategy, Joiner, Union, and Stored procedure, and XML
transformations.
• Created mapplets, mappings, complex worklets and workflows.
• Implemented Type1 and Type2 methodologies in ODS tables loading, to keep historical data in
data warehouse.
• Solid extensive exposure to PLSQL and UNIX Shell Scripting.
• Extensively worked on OBIEE testing.

3. • Have migrated the code into different instances using kintana application.
• Have involved in resolving the issues faced during the testing.
• Prepared unit test cases and SIT test cases.
• Have done unit testing, SIT testing and UIT in different instances.
• Tested and compared data on OBIEE results with Database results.
• Worked as an ETL onsite coordinator at client site.
• Involved in meetings to gather information and requirements from the clients.
• Analyzed the requirements to identify the necessary tables that need to be populated in to the
staging database.
• Interacted with users about the requirements and reported the status of the project on weekly
basis.
• Coordinated with offshore team and conducted meetings twice a day to discuss on project
status up-to-date.
• Have documented design, requirement documents. Documented clearly the implementation
release notes to production team to implement the code correctly in production.
• Played a crucial role as a team lead and delivered project to users on schedule.
• Involved in the Analysis, Design, Coding and testing of the ETL mappings.
• Created LLD's, HLD's and test case documents.
Environment:
Informatica powercenter6.1/8.1, Oracle, Winscp, OBIEE, Unix Shell scripting, Kintana, Citrix.
Client: Motorola Mobility LLC, Chicago IL Dec ’13 – Apr ‘15
Project: Verizon CTO
Motorola’s Mobile Devices portfolio includes a broad array of converged devices including smart phones
based on the Android™ operating system, as well as tablets and Bluetooth® accessories. Motorola
Mobility addresses the needs of consumers and businesses to deliver Internet services, email, social
networking and entertainment in the palm of one’s hand. Implementation of Verizon POS project
enables the Configure to order (Arctic Fox) capability for Verizon customers.
Role: ETL Informatica developer
Responsibilities:
• Created tables, synonyms, sequences, views, PL/SQL stored procedures and triggers.
• Developed mappings for implementing type I and type II slowly changing dimensions and
dimensional hierarchies and aggregates.
• Design of System Test cases and implementing integration testing.
• Working on Teradata External Loaders using Informatica.
• Developed shell scripts for loading the data from the operational data store (ODS) into the
staging area in the warehouse.
• Extensively worked on performance tuning of mappings, sessions and various ETL Processes.
• Responsible for creating user groups, privileges to the users using repository manager.
• Responsible for repository creation, node creation, domain startup/shutdown, bouncing nodes
on Informatica server.
• Mentoring other developers in technical and business aspects.
• Created reports for availability of Informatica server using BAC monitoring tool.
• Involved in business analysis and technical design sessions with business and data architect to
develop requirements document, data models and ETL specifications.

4. • Developed error handling mechanism to load invalid records into error table with an
appropriate status. The status of the record determines whether the record is to be
reprocessed with the next day load.
• Involved in OBIEE Administration for creating user accounts, granting privileges, creation of
security groups, creation of dashboards, deployment of catalogs into UAT and Production,
bouncing services of OBIEE.
• Wrote shell scripts to kick off workflows, send out notifications on failure.
• Used Post and Pre session commands to call scripts which Drop, recreate indexes, run reorg and
runstats on the warehouse table which was loaded.
Environment:
Informatica 8.6.1, Linux, Windows NT/2000, Clearcase and Kintana tools, OBIEE Admin.
Client: Transunion, Chicago IL July ’12 – Dec‘13
Project: CRS – Consumer Relations System
TransUnion LLC is one of the leading Credit History information providers in USA. At TransUnion, CRS is
a consumer relation cell, which caters to all credit report related needs of a consumer. The scope of
the project is to work on the credit reports of the consumers based on the request. Worked very
closely with customers, end users and powered users collect requirements and training or resolve any
business process related issues.
Role: ETL Informatica developer
Responsibilities:
• Created User defined functions to reuse the logic in different mappings.
• Extensively used mapping parameters, mapping variables to provide the flexibility and
parameterized the workflows for different system loads.
• Creation of sessions and workflows according to the data load in to different systems.
• Data investigation in the analysis of incoming data from the various source systems,
documenting the data anomalies and generating Data Quality reports.
• Involved in different phases of testing like Unit, Functional, Integration and System testing.
• Creation of Review documents for specification document and test cases.
• Performance tuning of targets, sources, mappings and sessions.
• Involved in database testing, writing complex SQL queries to verify the transactions and
business logic like identifying the duplicate rows by using SQL Developer.
• Analyzed and understood business and customer requirements by interacting with Business
Analysts, Data Modelers and Subject Matter Experts.
• Wrote and reviewed documents like Functional Specifications, Data Mapping Sheets and
Technical Specification Documents.
• Prepared documents like Deployment Doc, Estimation Reports, Development tracking report
and weekly status Reports
• Established standard code migration process.
• Extracted data from a wide variety of sources like flat files, XML files, Relational Databases
(Oracle, SQL Server) and from the legacy mainframe systems by using Informatica Power
Exchange.
• Involved in creation of Informatica mappings to build business rules to load data using
transformations like Source Qualifier, Expression, Aggregator, Lookup, Filter, Router, Update
Strategy, Normalizer, Stored procedure, XML and Sequence generator transformations.

5. Environment:
Informatica 8.6.1, Toad, Quality Center
Client: Royal Bank of Scotland, Stamford CT July ’11 - July ‘12
Project: Pilot 1 SUAM – Strategic User Access Management
In 2009 RBS acknowledged that, although significant improvements have been achieved, the previous
user access programs had not fully delivered their objectives. Multiple issues have been found in the
previously implemented applications which led in to the decision of launching a new program called
Strategic User Access Programme (SUAMP).
SUAMP is designed to:
• Define and support the implementation of people, process and technology solutions that
underpin the strategy.
• Deliver tactical short-term solutions to support the business as the long term strategy is
implemented.
The scope of the project is to develop a Group-wide user access strategy that is consistent across the
Group but is flexible and risk based.
Role: Informatica developer
Responsibilities:
• Involved in the Analysis, Design, Coding and testing of the ETL mappings.
• Created LLD's, HLD's and test case documents.
• Created documents like code review check list, Migration check list.
• Involved in performance tuning of Informatica jobs.
• Created and performed unit testing.
• Involved in all the existing releases and helped the team in resolving critical issues.
• Created reusable objects like Mapplets, Reusable Transformations and work lets.
• Involved in the design of historical load and incremental load Process.
• Develop ETL deployment plan and ETL operations manual to coordinate and drive ETL activities
in Test and Production environment.
• Worked with the QA team to test the code.
Environment:
Oracle 9i, PL SQL, Pro *C, SQL Plus, Visual Source Safe, Pl Sql developer, Toad, Putty, Windows 2000
and UNIX.
Client: Lowes, Mooresville NC Dec ’10 – June ‘11
Project: SP 6 – Services Platform 6
Lowes is a U.S.-based chain of retail home improvement and appliance stores that has retail stores in
the United States, Canada, and Mexico. Currently, Lowe’s administered Extended Protection Plans
(EPP) covers only Major Appliances (MAJAP) sold by Lowe’s. The non-MAJAP list of categories (BOR) are
covered under National Electronics Warranty (N.E.W) administered EPPs and RPs which implies that any
post sales services (Repairs / product replacements) for non-MAJAP will be done through N.E.W

6. contract. Going forward Lowe’s business must be able to service (Repairs/Product Replacements) their
customers through Lowe’s administered EPPs and RPs for all the serviceable / eligible products.
The scope of the project is to achieve this Lowe’s will start selling Lowe’s administered EPPs/RPs for
BOR product categories and also provide repair service for those products with the ability to determine
based on business rules, which products are eligible for repairs, and the proper payment disposition of
the associated repair requests.
Role: Informatica Developer
Responsibilities:
• Created Tables, Keys (Unique and Primary) and Indexes in the SQL server.
• Fine-tuned existing Informatica maps for performance optimization.
• Created sessions, batches for incremental load into staging tables and scheduled them to run
daily.
• Used shortcuts to reuse objects without creating multiple objects in the repository and inherit
changes made to the source automatically.
• Designed workflows with many sessions with decision, assignment task, event wait, and event
raise tasks, used Informatica scheduler to schedule jobs.
• Worked on different tasks in Workflow Manager like Sessions, Events raise, Event wait,
Decision, E-mail, Command, Worklets, Assignment, Timer and Scheduling of the workflow.
• Design complex mappings involving constraint based loading, target load order.
• Involved in gathering requirements and created design documents and mapping documents.
• Involved in design, development and modification of ETL mappings and stored procedures in an
optimized manner. Involved in Unit Testing and System Testing stages.
• Debugged mappings by creating logic that assigns a severity level to each error, and sending
the error rows to error table so that they can be corrected and re-loaded into a target system.
• Worked on bug fixes on existing Informatica Mappings to produce correct output.
Environment:
Informatica Power Center 7.X, Oracle , MS SQL Server 2005, Oracle, windows, Mainframes, EFT, FTP,
SQL Plus, My SQL Workbench.
Client: Nielsen, Chennai India Dec ‘09 – Dec‘10
Project: C2C - Client to Customer
Nielsen Media Research (NMR) measures media audiences, including television, radio, theatre films and
newspapers. Customers use NMR’s television audience research information to buy and sell television
time as well as to make program decisions. That information is the currency in all the transactions
between buyers and sellers. The scope of the project is to create custom reports based on Nielsen
media research National and Hispanic audience estimates.
Role: Oracle Programmer
Responsibilities:
• Gathered the requirement from the client and translated the business design into Technical
design.
• Monitor performance and changing performance requirements through application of database
tuning and performance optimization techniques.

7. • Designed forms and reports according to the client requirements. In various applications
• Created Triggers, procedures and functions are developed in this reports using PL/SQL.
• Created database objects such as tables, views, synonyms, indexes, sequences and database
links as well as custom packages tailored to business requirements.
• Prepared Mapping documents and design documents for data conversion.
• Developed validation procedures and error reporting on the data in the intermediate tables.
Created user defined Exceptions while handling exceptions.
• Troubleshooting production problems and worked effectively with other team members to
identify and address problem.
Environment:
Oracle10g (SQL/PL/SQL), Toad, SQL*Plus, SQL Developer 1.5.5, UNIX, Scripting (Shell and Perl), PERL,
Informatica Power center 9, Quality Center 10.0.
Client: Nielsen, Chennai India Apr ’09 – Dec‘09
Project: MB – Market Breaks and Sigma
Nielsen Media Research (NMR) measures media audiences, including television, radio, theatre films and
newspapers. Market Breaks is a web based tool which lets the users to analyze Nielsen Media Research
market breaks across Broadcast network, Syndication and cable network sources at weekly level based
on the National Nielsen People Meter Sample and produce customized reports. It allows clients to
directly request and analyze pre-aggregated market break ratings data for multiple programs and for
extended periods of time. It also creates analyses based on specific target audiences and competitors,
using combinations or subsets of data in addition to those in the standard published Nielsen Media
Research reports. The scope of the MB project is to analyze Nielsen Media Research market breaks
across Broadcast network, Syndication and cable network sources.
The scope of the SIGMA project is to monitors TV Stations, Cable, and Satellite systems for
occurrences of these video events in over 200 markets and reports where and when any were
broadcast.
Role: Database Programmer
Responsibilities:
• Participated in meetings with users, Business analysts in understanding the business
requirements.
• Involved in writing the UNIX shell scripts to automate Oracle jobs.
• Involved in Developing and handling the PL/SQL Packages, Procedures and Database Triggers.
• Involved in preparing program flows and test plans.
• Involved in fixing the bugs at the runtime.
• Developed and maintained the reusable codes as Common Library routines.
Environment:
UNIX, Windows NT, Oracle 9i, SQL, PL/SQL, SQL * Plus, Toad.
Client: Health Net June ’08 – Apr ‘09

8. Project: Health Net DW
HN Enterprise data warehouse deals with different kinds of health claims which are categorized as
Institutional, Professional, Outpatients and Inpatients. Health Net gets the source data for Members,
Claims, Brokers, Providers, Payers, Beneficiaries, payees etc, from various source systems like AS400,
Oracle, SQL Server, DB2 and Mainframe. This data will be loaded in to EDW based on different
frequencies as per the requirement.
The core objective of this project was to build enterprise data warehouse and consolidates strategic
information pertaining to customer, vendor, and its related transaction to facilitate metric collection
and further analysis of operation data. The tables were populated with Members, Claims, Brokers,
Providers, Payers, payees and Beneficiaries related data using ETL process.
Role: ETL Developer
Responsibilities:
• Created the Informatica Mappings, Sessions and Batches, ensuring the Business Rules and Data
Validation.
• Designed and developed the data transformations for source system data extraction; data
staging, movement and aggregation; information and analytics delivery; and data quality
handling, system testing, performance tuning.
• Involved in preparing ETL and Reporting Design Documents.
• Maintained the documentation for errors occurred.
• Created Informatica Mappings to build business rules to load data using transformations like
Source Qualifier, Aggregator, Expression, Joiner, Connected and Unconnected lookups, Filters
and Sequence, External Procedure, Router and Update strategy.
• Involved Unit testing the mappings and sessions.
• Involved in Production Support Activities.
Environment:
Informatica Power Center 7.x, Oracle 9i, windows, Mainframes, DB2, Oracle, SQL Plus.