Sr. Data Analyst Resume
Philadelphia, PA
SUMMARY
- 8+ years of IT Experience as a Data Analyst, Business Analyst, and Data Modeler especially in Data Warehousing and Business Intelligence applications.
- Experience as a Business Analyst for data warehousing with a good knowledge and expertise in all phases of SDLC methodology including analysis, design, development, testing and maintenance.
- Extensive experience working with SQL & PL/SQL in creating stored procedures, views, triggers and database schemas.
- Proficient in Data Analysis on Oracle, MS SQL Server & MS Access with sound knowledge in extraction of data from various database sources like Oracle, MS SQL Server, DB2 and Flat files into the Data Stage.
- Experience in working with Sybase Power Designer for creating conceptual data model with entities, attributes, and relationships.
- Explored the reverse engineering features of Power Designer to create physical, conceptual and object - oriented models from an existing database.
- Experience in BI tools such as Business Objects, QlikView, Xcelsius, Crystal, OBIEE, ETL, Hyperion, Ab initio
- Knowledge of executing the projects in Agile methodologies.
- Well versed in system analysis, ER/Dimensional Modeling, Database design and implementing RDBMS specific features.
- Good in Normalization (1NF, 2NF, 3NF and BCNF)/Denormalization techniques for effective and optimum performance in OLTP and OLAP environments.
- Expertise in OLTP/OLAP System Study, Analysis and E-R modeling, developing Database Schemas like Star schema and Snowflake schema used in relational, dimensional and multidimensional modeling.
- Exploited power of Teradata to solve complex business problems by data analysis on a large set of data.
- Efficient in process modeling using Erwin in both forward and reverse engineering cases.
- Well versed with Data Migration and Data Conversions using DTS, PL\ SQL Scripts.
- Experience in writing DDL, DML commands.
- Used TOAD for SQL developing.
- Experienced in conducting JAD Sessions.
- Experience in documenting Interface Agreement.
- Experience in using Visual Studio for GUI applications and Windows Forms applications.
- Experience in defining events within Business Process using Workflows.
- Very good exposure to ETL tools like Informatica, MicroStrategy and IBM Data stage.
- Extensive experience in the development, implementation and integration of strategies within a team oriented environment, utilizing quantitative and qualitative analytical skills.
- Excellent analytical, inter-personal and communication skills with clear understanding of business process flows.
TECHNICAL SKILLS
Languages: SQL, PL/SQL, T SQL, Visual Basic 6.0, XML, HTML, Java.
Operating Systems: Windows (NT/XP/95/98/2000), UNIX, Sun Solaris, Mac OS.
Databases: Oracle 10g/9i/8i, SQL Server 2000/2005/2008 , PL/SQL, SQL*Plus, SQL*Loader, IBM DB2, MS SQL Server 2000/7.0/6.5 , MS Access 2000, Teradata V2R5.0.
Data Modeling Tools: Erwin, Sybase Power Designer, Clear quest, Rational Rose, MS Visio, ER Studio, Oracle BPA, SA - System Architect.
Reporting Tools: Business Objects 5.x / 6.5, Cognos 7.0/6.0, Crystal (6, 8, and 11), OBIEE Business Intelligence Enterprise edition 10.3.4.1, Hyperion.
Web Development Tools: Macromedia Dream Weaver4.0, Flash 5.0, Adobe Photoshop
ETL Tools: Informatica Power Center 8.6/7.1/6.2
PROFESSIONAL EXPERIENCE
Confidential, Philadelphia, PA
Sr. Data Analyst
Responsibilities:
- Gathered the requirements document and analyzed the process.
- Data profiling and analyzing the requirements and developing models using reverse engineering.
- Translate business requirements into conceptual, logical data models and integration data models, model databases for integration applications in a highly available and performance configuration using ER/Studio.
- Created Physical Data Model from the Logical Data Model using Compare and Merge Utility in ER/Studio and worked with the naming standards utility.
- Performed GAP analysis with Teradata MDM and Drive (SQL) data models to get clear understanding of requirements.
- Used Base SAS, SAS/STAT, SQL and Macro facility to manipulate demographic, credit history and lifestyle data sets.
- Ensured the quality, consistency, and accuracy of data in a timely, effective and reliable manner.
- Worked within the larger Upstream ITSS organization by contributing to the capture of synergies and implementation of best practices.
- Analysed the existing as-is system for Insurance Personal Lines, tracked defects, provided recommendations to make enhancements in the future to-be system.
- Involved in generating Test cases for property and casualty Insurances for Different Levels of Business.
- Experience in understanding user requirements around technical data, interaction of data between systems and system dependencies.
- Prepared and distributed Escalation Report and Daily Metrics through SAP (Business Object Web Intelligence) for the manager for Business improvement purpose.
- Worked to ensure high levels of data consistency between systems.
- Worked with the global technical data community and assist with implementing the global data management strategy.
- Involved in developing many Dash Boards for home, rental and auto insurance.
- Worked with Oracle SQL Developer to develop the SQL scripts.
- Developed PL/SQL programming that included writing Views, Stored Procedures, Packages, Functions and Database Triggers.
- Experience in developing Web applications using Visual Studio.Net, C# and InterSoft WebGrid
- Worked with ETL teams and used Informatica Designer, Workflow Manager and Repository Manager to create source and target definition, design mappings, create repositories.
- Automate periodic reports using Excel VBA, SQL server, Hyperion, Essbase, SSIS Package for management team.
- Developed and maintained data dictionary to create metadata reports for technical and business purpose.
- Created action plans to track identified open issues and action items related to the project.
- Prepared analytical and status reports and updated the project plan as required.
Environment: Oracle SQL Developer, MS Access, Base SAS,VBA, Teradata, Informatica Power Center 4.7, ER/Studio Data Architect 9.0, SSIS, Windows XP, Excel, Business Objects, Crystal Reports.
Confidential, Wilmington, DE
Sr.Data Analyst
Responsibilities:
- Worked with the Business analyst for gathering requirements.
- Identified the key facts and dimensions necessary to support the business requirements. Develop the logical dimensional models.
- Used UML and Visio for creating Activity diagrams, Sequence Diagrams.
- Used Erwin for relational database and dimensional data warehouse designs.
- Developed entity and attribute descriptions and definitions for the models and ensure that conflicts in descriptions and definitions are resolved.
- Conducted and participated in JAD sessions with the users, modelers, and developers for resolving issues.
- Conducted design discussions and meetings to come out with the appropriate data mart using Inmon methodology.
- Converted SAS code to TSQL and generated reports using migrated code.
- Worked with Master Data Management architects to develop data models.
- Use SAS to load and extract data from various data sources.
- Writing complex queries using Teradata SQL.
- Involved in writing code using Base SAS & SAS/Macros to clean and validate data from tables.
- Used BTEQ for SQL queries and TPump for loading data from source into Teradata tables.
- Used Teradata utilities such as Fast Export, MLOAD for handling various tasks.
- Performed source data quality assessments.
- Experience in Data Transformation and data cleansing.
- Identified the objects and relationships between the objects to develop a logical model in Erwin tool.
- Translated the logical model into physical model using Forward Engineering technique in Erwin tool for both OLAP and OLTP systems.
- Created Data Definitions and help maintain Metadata repository.
- Defined and processed the facts and dimensions.
- Created DDL scripts for static dimensions and ETL mappings using Informatica.
- Utilized Erwin for reverse engineering the database from DDL scripts.
- Assisted the Data Acquisition Architect to ensure the Data Architecture is applied properly.
- Involved in resolving the data type inconsistencies between the source systems and the target system using the Mapping Documents.
- Developed PL/SQL programming that included writing Stored Procedures, Packages, Functions and Database Triggers.
- Experience in using SSIS in solving complex business problems.
- Experience in using SSRS and Cognos in creating and managing reports for an organization.
- Created documentation, worked with users for new module enhancements and testing.
Environment: PL/SQL, SQL Server 2008, SSIS, Oracle 10g, MS SQL, VBA, Teradata, Informatica Powercenter, Erwin r7.3, Windows XP, Excel.
Confidential, Columbus, OH
Sr. Data Modeler/Data Analyst/Developer
Responsibilities:
- Involved in gathering user requirements along with business analysts.
- Involved in a team conducting data modeling JAD sessions and logical data analysis, communicated data-related standards.
- Created documentation for Technical & Business User Requirements during requirements gathering sessions using Rational Requisite Pro.
- Identified and validated high potential business opportunities for stakeholders and developed customized business strategies that are aligned with corporate strategic objectives.
- Transformed project data requirements into project data models for OLAP and OLTP systems using Erwin.
- Prepare prototype models to support the development efforts. Assist the business analyst in mapping the data from source to target.
- Involved in modeling business processes through UML diagrams using Rational Rose.
- Conducted logical data model walkthroughs and validation.
- Extensively worked on Shell scripts for running SAS programs in batch mode on UNIX.
- Facilitated transition of logical data models into the physical database design for data marts using Inmon methodology and recommended technical approaches for good data management practices.
- Performed the activities necessary to support the standardization of facts and dimensions.
- Developed various use case diagrams using MS Visio.
- Created entity relationship diagrams, functional and data flow diagrams. Developed the data mart for the proposed project.
- Used Sybase power designer tool for relational database and dimensional data warehouse designs.
- Analyze the existing data model and document suspected design affecting the performance of the system.
- Worked with DBA group to create Physical Data Model from the Logical Data Model using Forward engineering in Erwin.
- Reverse Engineered the database structure from the existing application using Sybase power designer.
- Developed Data Migration and Cleansing rules for the Integration Architecture (OLTP, ODS, DW).
- Developed data mapping documents between Legacy, Production, and User Interface Systems.
- Documented data content, data relationships and structure, and processes the data using Informatica PowerCenter Metadata Exchange.
- Wrote PL/SQL statement and stored procedures in Oracle for extracting as well as writing data.
- Wrote DDL and DML statements for creating, altering tables and converting characters into numeric values.
- Turned SQL queries to make use of data base indexes, and analyzed the data base objects.
- Used SSIS, SSRS for solving business problems and creating reports in organization.
- Created a report using Hyperion based on the data model.
- Involved in the mapping of data sources and analytics, with the goal of ensuring data quality.
- Expert in data cleansing for accurate reporting. Thoroughly analyze data and integrate different data sources to process matching functions.
Environment: Rational Requisite Pro, Informatica, PL/SQL, MS SQL, SQL Server 2008, Sybase 12, Ms Visio, Business Objects, Windows NT, Linux, UNIX,Sybase Power Designer.
Confidential
Data Analyst
Responsibilities:
- Involved in gathering user requirements along with business analysts.
- Conducted logical data analysis and data modeling JAD sessions, documented data-related standards.
- Identified the key facts and dimensions necessary to support the business requirements. Develop the logical dimensional models.
- Make use of data modeling techniques in designing the data marts project.
- Used Rational Rose 2000 for Object Modeling in UML.
- Created views and extracted data from Teradata base tables and uploaded data to oracle staging server from Teradata tables, using fast export concept.
- Gather all the Sales Analysis report prototypes from the business analysts belonging to different Business units.
- Gather the various requirement matrices from the business analysts.
- Worked with Master Data Management.
- Assisted the DBA in converting the logical models to physical.
- Conduct Design discussions and meetings to come out with the appropriate Data Mart using Kimball Methodology.
- Released the reports through UNIX shell scriptingevery month based on requirement
- Designs for the various reporting requirements.
- Conduct Design reviews with the business analysts, content developers and DBAs to ensure the feasibility of the designs.
- Used Erwin for developing data model and forward engineer the data model.
- Reverse engineer the data base in to physical data model by using Erwin.
- Developed entities and relationships using Sybase Power Designer.
- Developed Data Migration and cleansing rules for the integration architecture.
- Developed data mapping documents between legacy, production and user interface systems.
- Designed different type of STAR schemas like detailed data marts, Plan data marts,
- Used Erwin for monthly summary data marts and inventory data marts.
- Worked with the Implementation team to ensure a smooth transition from the design to the implementation phase.
Environment: Oracle 8i, Windows NT, ER-Win 4.0, Sybase Power Designer, Teradata, UNIX, SQL Loader, Data Junction, Rational Rose 2000, Oracle Express Server.