Transforming presentation: What is a Pivoting operation ? It is a key technique in DWH: allow you to transform multiple rows of...

Data Integration and ODI - Concepts Integration projects can be: Data Oriented, especially those involving large data volumes. Eve...

Data Warehouse: Four (4) typical transformation and loading scenarios (a) Key Lookup Scenario (b) Business Rule Violation Sce...

Building a Data Warehouse: typical steps and milestones Research and specify business needs ( Key Indicators ) Identify data sourc...

External tables  do not reside in the database, and can be in any format for which an access driver is provided. You can select , join ...

@Amazon Common requirements of Data Warehouse systems Must provide easy access to the organization's information Show consist...