OLTP vs OLAP
The Data Warehouse (OLAP) is different from the operational database(OLTP) which is used and maintained for day-to-day operational systems. Following are the few differences: OLTP application oriented...
View ArticleDimensional Data Model
To design a datawarehouse one need to design dimensional data model. The dimensional data model provides a method for making databases simple and understandable by denormalizing it and removing extra...
View ArticleSlowly Changing Dimension
Have you encountered a situating where your main customers are mainly college going students and they are your main customers and you have seen substantial revenue drops when these students pass out...
View ArticleWhat is Metadata?
Metadata is the information or data in Data Warehouse that is not exactly the data itself but its data about the data. In a broader way you can view Metadata as an encyclopedia of the data warehouse....
View ArticleData Warehouse Project Life Cycle
Executing a data warehousing project is not different than executing any other development project. However one needs to be very structured and methodical in order to execute a project and making it a...
View ArticleWhat is BigData?
BigData, this is the next big thing for in Information technology. As per McKinsey it is the next frontier for next innovation, completion and productivity. But what really means a big data is the...
View ArticleAnnouncing BIDW Q&A Community Forum Launch
We are very please to announce that we have launched BIDW Q&A Community. Exclusive professional Q&A portal for Business Intelligence, Data Warehousing and Data Professional. This portal has...
View ArticleUnderstanding HDFS Architecture – Part 1
HDFS is a distributed file systems used in Hadoop ecosystem. HDFS is similar to any other distributed file system however it also posses other features which makes it very different from any other...
View ArticleUnderstanding HDFS Architecture – Part 2
This is a second post in continuation to “Understanding HDFS Architecture”. In this post we will discuss basic components of HDFS. Namenode Namenode acts as master in HDFS. It stores file system...
View ArticleCompetitor price monitoring: necessary research or waste of time?
Surely if you price your products and services according to their branding, their worth, then they’ll fly off the shelves…? Obviously, I’m playing devil’s advocate and to be more specific, obviously,...
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