Evolution of Business Intelligence (BI)

• Executive information systems (EIS)

• Management Information System (MIS)

• Decision Support Systems (DSS)

• Business Intelligence (BI)

Information:

Information in an organization could exists in two different types of systems:

•Online Transaction Processing (OLTP) systems (Operational Systems)

•Data Warehouse (DWH) systems

Both OLTP and DWH systems have different purpose, business needs and users.

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Top 130 SQL Interview Questions And Answers

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Informatica sample project

Informatica sample project - 1 CareFirst – Blue Cross Blue Shield, Maryland (April 2009 – Current) Senior ETL Developer/Lead Model Office DWH Implementation (April 2009 – Current) CareFirst Blue Cross Blue Shield is one of the leading health care insurance provided in Atlantic region of United States covering Maryland, Delaware and Washington DC. Model Office project was built to create data warehouse for multiple subject areas including Members, Claims, and Revenue etc. The project was to provide data into EDM and to third party vendor (Verisk) to develop cubes based on data provided into EDM. I was responsible for analyzing source systems data, designing and developing ETL mappings. I was also responsible for coordinating testing with analysts and users. Responsibilities: · Interacted with Data Modelers and Business Analysts to understand the requirements and the impact of the ETL on the business. · Understood the requirement and develope

Datawarehouse Architect

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