SCD type 2 will store the entire history in the dimension table. In SCD type 2 effective date, the dimension table will have start-date and end-date as the fields. If the end-date is null, then it ...

ETL (Extract, Transform and Load) is a key, and very complicated, component of a data management strategy. This high-level checklist of the most central issues will help you get started with this ...

A data warehouse is a central repository of corporate data derived from operational systems and external data sources. The main function of a data warehouse is to support strategic business decisions ...

Panoply.io, the self optimizing analytics infrastructure company, announced results from its survey at AWS re:Invent end of 2016. 833 attendees shared feedback about data warehouse trends, where 80% ...

In this approach, only the information about a previous value of a dimension is written into the database. An ‘Old ‘or ‘Previous’ column is created which stores the immediate previous attribute. The ...