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  • Data Retention and Purging in a Data Warehouse

    By the typical definition of data warehouse, we expect the data warehouse to be non-volatile in nature for its entire design life time. As long as it remain operation, all data loaded in the data warehouse should remain there for the purpose of...

  • Top 10 things to avoid in DWBI project management

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  • Why people Hate Project Managers – A must read for would-be managers

    "Project Managers" are inevitable. Love them or hate them, but if you are in a project, you have to accept them. They are Omnipresent in any project. They intervene too much on technical things without much knowledge. They create unrealistic...

  • OLTP and OLAP

    OLTP stands for On-line Transaction Processing and OLAP stands for On-line Analytical Processing. We may have heard these definition many times. But do we really understand the difference between them. Let's explore further on these two kinds of...

  • Enterprise Data Warehouse Data Reconciliation Methodology

    An enterprise data warehouse often fetches records from several disparate systems and store them centrally in an enterprise-wide warehouse. But what is the guarantee that the...

  • Decision Support System (DSS)

    Decision Support System (DSS) is a class of information systems (including but not limited to computerized systems) that support business and organizational decision-making activities. A properly designed DSS is an interactive software-based system...

  • A road-map on Testing in Data Warehouse

    Testing in data warehouse projects are till date a less explored area. However, if not done properly, this can be a major reason for data warehousing project failures - especially in user acceptance phase. Given here a mind-map that will help a...

  • Top 5 Challenges of Data Warehousing

    Data warehousing projects are one of its kinds. All data warehousing projects do not pose same challenges and not all of them are complex but they are always different. This article illustrates the top 5 challenges that often plague modern data...

  • What is a data warehouse - A 101 guide to modern data warehousing

    This article discusses data warehousing from a holistic standpoint and quickly touches upon all the relevant concepts that one needs to know. Start here if you do not know where to start from.

  • Business Intelligence

    In a 1958 article, IBM researcher Hans Peter Luhn used the term business intelligence. He defined intelligence as: "the ability to apprehend the interrelationships of presented facts in such a way as to guide action towards a desired goal."