Some interesting information about Data Warehouse

Lately, businesses have woken up to the fact that a data warehouse (DW)can help them in performing analysis, reporting, and similar tasks. This concept has caused a stir despite the fact that not many businesses are familiar with its benefits. As a matter of fact, it is unknown to many businesses that a typical warehouse consists of three different layers. These layers include staging, integration, and access. Nevertheless, it is important that you familiarize yourself with the basics of this concept before giving it a shot.  The following facts would certainly give you a deeper insight:

· A Data warehouse (DW) has plenty of benefits. For instance, you can maintain the data history in an easy manner. As a matter of fact, this can be easily done even if the source transaction systems fail to do so. Furthermore, you would begin to notice a considerable improvement in the quality of the data. There are numerous benefits. You need to be well-versed with the nuances to be able to make the most of it. 

- Not many people are aware of the fact that this concept is not new. In fact, it has been doing the rounds since 1980s. However, the things didn’t materialize for a very long time.

· A DW can be used for various purposes. For instance, many businesses use it to restructure their data. Perhaps they do it to ensure that the business users can easily interpret the data. Similarly, there are some firms that resort to data warehousing in order to maintain consistency. They strive to present the information in a consistent manner.

· If a business is planning to opt for warehousing, it needs to follow either of the two approaches – the normalized approach and the dimensional approach. Both of these approaches have their own pros and cons. You need to analyze them before opting for one.

These days, the Hadoop Distributed File System (read: HDFS) seems to be all over the news. As a matter of fact, it is being said that this file system might replace the traditional warehouse in the years to come. However, experts claim that these are mere speculations, and nothing of this sort would happen. Nevertheless, it certainly has some advantages. These are as follows:

· Often, businesses strive to create data awareness between the Job Tracker and the TaskTracker. This goal can be easily achieved with the help of HDFS.

· The Hadoop Distributed File System has surprised many businesses with its unparalleled reliability. Perhaps they are not aware of the fact that HDFS replicates the data across multiple hosts, and is much more reliable than its conventional counterparts.