2.6 Disadvantages

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Below are listed some of the most common disadvantages that may arise in the implementation of a Data Warehousing:
  • Requires a great investment, because its proper construction is not easy and resource-intensive, also from the same implementation involves the acquisition of tools for querying and analysis, to training user @ l @ s s.
  • There is resistance to change by l @ s user @ s.
  • The benefits of data warehouse are valued in the medium and long term. This follows the previous point, and basically means that not everyone sl @ s @ s users rely on the DW in the first instance, but it will once again proving its effectiveness and benefits.Moreover, their proper use arising from the experience.
  • If data are confidential own customers, suppliers, etc., the data warehouse infringement of the privacy of such, since any user can access @ them.
  • Underestimating the resources needed to capture, store and load data.
  • Underestimation of the effort required to design and creation.
  • Continued increase in the requirements of user @ l @ s s.
  • Underestimation of the capabilities that can provide the correct use of the DWH and BI tools to generatel.
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