With over 3 years of experience in the IT industry, I specialize in data warehouse applications, particularly focused on analysis, design, development, implementation, and troubleshooting. I excel in working with Informatica PowerCenter, where I design and develop ETL processes, create mappings, sessions, and workflows. I ensure data quality, integrity, and resolve data integration issues in an Agile environment. I have successfully delivered two data warehouse projects, optimized SQL queries for enhanced performance, and demonstrated expertise in working with databases like Oracle and SQL Server. My proficiency in writing and interpreting complex SQL statements enables effective handling of data transformations. I bring a strong background in ETL skills, including SQL optimization, performance tuning, and identifying bottlenecks for optimal efficiency in Informatica Load and overall system performance.
· Extract data from variety of sources like flat files, SQL Server and loaded to the data warehouse.
· Perform Performance tuning for sources, targets, mappings and SQL queries in the transformations to increase performance, troubleshoot long running Sessions for speedy data extraction and issue resolution.
· Work within the team of DBAs, BAs and Data Architects on the integration of various data sources definitions like SQL Server, Oracle, Flat Files.
· Identify and troubleshoot bottlenecks at various levels like SQL logic, Mappings, and Sessions to enhance the performance.
· Perform database tasks such as creating database objects (tables, views, procedures, functions).
· Create several database objects like views, indexes and procedures to resolve the performance issues.
· Create stored procedures for Data Processing and coordinated the DB issues with DBA's as required.
· Design the procedures for getting data from all systems, like IMS to Data Warehousing system.
· Conduct Business process analysis, task/workflow analysis.
· Translate the business processes/SAS code into Informatica mappings for building the data mart.
· Translate business processes from existing Datastage jobs into Informatica mappings.
· Work with database connections, SQL joins, Union, aliases, views, aggregate conditions.