Data Modeler / Data Warehouse Analyst / System Manager Resume
SUMMARY:
- Over 12+ years of experience in software consulting.
- Worked in Oracle Development for over 10+ years in developing Conceptual, logical models and physical database design for Online Transactional processing (OLTP) and Online Analytical Processing (OLAP) systems.
- Worked in various Industries such as Power, Manufacturing, E - Business, Retail and Tourism.
- Expertise in PL/SQL Procedures, Functions, Packages, Triggers, Materialized views, Collections, SQL* Loader, Data Loader, UTL FILE, External Tables, Tuning database queries, Forms6i, Reports6i, Interfaces, Conversions, DB Link, UNIX Shell Scripting.
- Extensive Experience with Data Extraction and Data loading through multiple applications/ Databases.
- Dimensional data modeling using star and snowflake schema in data warehouse/ data mart environment.
- Well versed in Normalization/De-normalization techniques for optimum performance in relational and dimensional database environments.
- Involved in all phases of the software development life cycle (SDLC), from user interviews, requirements collection and definition through to implementation and final testing.
- Experience in creating and documenting Metadata for OLTP and OLAP when designing a systems.
- Proficient in identifying Facts and Dimensions, Star Schema and Snow Flake Schema and ODS architecture for modeling a Data warehouse in Relational, Dimensional and multidimensional modeling.
- Experience in development of T-SQL, DTS, OLAP, Stored Procedures, Triggers, Functions, Packages, Performance Tuning and Optimization for business logic implementation.
- Good knowledge and working experience with data modeling tools like Erwin and Oracle Designer.
- Experience in data transformation, data mapping from source to target database schemas and data cleansing procedures.
- Facilitated and participated in Joint Application Development (JAD) sessions, and white board sessions to keep executive staff and the team members apprised of goals, project status, and resolving issues.
- Expert knowledge of SQL and PL/SQL.
- Proficient in System Analysis, ER/Dimensional Data Modeling, Database design and implementing RDBMS specific features.
- Well versed with Data profiling, Data Migration and Data Conversions.
SKILLS INVENTORY:
Database systems: SQL Server (2008/2005/2000/7.0 ), Oracle Databases (10g/9i/8i/7.3/6.0), MS access
Data modeling tools: Erwin, Oracle Designer
Programming Languages: UNIX shell script, Pascal, COBOL.
Operating Systems: Windows (NT/XP/2003), UNIX.
Other tools: MSOffice (Word, Excel, Power Point), MS Project.
PROFESSIONAL EXPERIENCE:
Confidential
Data Modeler / Data warehouse Analyst / System Manager
Responsibilities:
- Gathered requirements for algorithms to be used for investment “Customer recommendations” after meeting with senior account managers.
- Created low level design procedures to be created for generating “Customer recommendations” and communicated it to team members.
- Supervised and mentored development of PL/SQL Packages.
- Created Unit test plan and acceptance test plan and ensured testing.
- Created Data acquisition and Interface System Design Document.
- Develop and modify data models when required.
- Real time data upload systems were automated and provided by the regulatory authority vendor.
- Customer transactions were stored along with timestamp information in a data warehouse to maintain an archive of transactions for business, customer and regulatory requirements.
Environment: Oracle 10g/9i, PL/SQL, ETL, SQL*Loader
Confidential, Miami, Florida
System Manager/DBA/System Designer and Developer
Responsibilities:
- Responsible for managing the Oracle 9i database, fixing grave data inconsistency and application errors because of faulty system implementation and inadequate user training.
- Implemented changes in business rules and practices on the application system and database.
- Performed regular data backups, did performance tuning, fixed problems with software and data to ensure smooth operation.
- Had a constant dialog with system users to identify problems and acted as the one man help desk at Confidential and Confidential .
- Created new Forms and Reports in 6i for the management in order to facilitate inventory and cash flow management.
- Wrote a number of PL-SQL triggers and subroutines to accomplish data consistency and referential integrity.
Environment: Oracle Designer, Oracle 9i, PL/SQL, ERwin, MS-Office, Win 98/NT
Confidential, Miami, Florida
Oracle Consultant
Responsibilities:
- Wrote scripts to transfer data from the companies Microsoft SQL database to its new Oracle database. The scripts had to be efficient and comply with run time restrictions.
- Wrote scripts to cross-check and verify data integrity after transfer.
- Converted existing procedures in T-SQL to run on the Oracle server. After conversion, wrote test procedures to test the new procedures.
Environment: Microsoft SQL, T-SQL, Oracle 9i (UNIX), PL/SQLMobile
Confidential, Miami, Florida
Oracle Consultant
Responsibilities:
- Designed and developed an enterprise wide Data Mart in Oracle 8i. Analyzed user requirements, designed and created a four dimensional star schema for a Web Content Management System.
- Wrote scripts (SQL*Loader, PL/SQL) to Extract, Transform, Load (ETL) legacy data from a Navision database to Oracle using flat files.
- Also loaded image files into Oracle tables (JPEG files to BLOB datatypes).
- Developed forms in Oracle Forms 6i to implement “Image Management System “and “Content Management System” for web deployment.
Environment: Oracle 8i, PL/SQL, Oracle Forms 6i & Reports 6i, SQL*Loader
Confidential, North Miami, Florida
Oracle Consultant
Responsibilities:
- Met users to identify requirements and created a Normalized data model.
- Wrote PL/SQL stored Packages and SQL*Loader scripts to Extract, Transform, Load (ETL) legacy data.
- Developed the Purchase Order System using Oracle Forms 5.0 and Reports 3.0.
- The Forms and Reports were designed, coded and generated in Designer 2000 v2.1 and BrioQuery.
- The Purchase Ordering and Traffic Control Systems involved creating 45 Forms and 33 Reports.
Environment: Oracle 8i (NT), PL/SQL, Oracle Forms 5 & Reports 3, SQL*Loader
Confidential, Bay City, Texas
Oracle Consultant
Responsibilities:
- Designed and developed an Equipment Clearance system to create work orders for executing maintenance operations at a nuclear power plant.
- Project pre-requisites were that the system be operator error resistant.
- We had to implement all safeguards and business rules required by a nuclear plant and handle a high volume of transactions without user conflict.
- Identified and analyzed user requirements.
- Drew up a Normalized database design and an Application design, which satisfied business needs and ensured system safety.
- The database and forms were generated from Designer 2000 v1.3.
- Delivered to the customer’s satisfaction after testing.
Environment: Oracle 7.3 (UNIX), PL/SQL, Oracle Forms 4.5 & Reports 2.5, Designer 2000 v1.3