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Data Warehousing
Implementation Issues
Data Engineering and Cloud Computing Department
Reva University
SRN:R16MDC06
Data Warehousing Implementation Issues
 Implementing a data warehouse is generally a massive effort that must be planned and
executed according to established methods
 There are many facts to the project lifecycle, and no single person can be an expert in each
area
Some best practices for implementing a data warehouse (Weir, 2002):
 Project must fit with corporate strategy and business objectives
 It is important to manage user expectations about the completed project
 The data warehouse must be built incrementally
 Build in adaptability
Data Warehousing Implementation Issues
 The project must be managed by both IT and business professionals
 Develop a business/supplier relationship
 Only load data that have been cleansed and are of a quality understood by the organization
 Be politically aware
Risk Factors
Turban et al. (2006) listed the following reasons:
 Cultural issues being ignored
 Inappropriate architecture
 Unclear business objectives
 Missing information
 Unrealistic expectations
 Low quality
Issues to Consider to Build a Successful Data Warehouse
 Starting with the wrong sponsorship chain
 Setting expectations that you cannot meet and frustrating executives at the moment of
truth
 Loading the warehouse with information just because it is available
 Choosing a data warehouse manager who is technology oriented rather than user oriented
 Focusing on traditional internal record-oriented data and ignoring the value of external
data and of text, images, and, perhaps, sound and video
Issues to Consider to Build a Successful Data Warehouse
 Believing promises of performance, capacity, and scalability
 Focusing on ad hoc data mining and periodic reporting instead of alerts
Data Warehousing Implementation Issues

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Data Warehousing Implementation Issues

  • 1. Data Warehousing Implementation Issues Data Engineering and Cloud Computing Department Reva University SRN:R16MDC06
  • 2. Data Warehousing Implementation Issues  Implementing a data warehouse is generally a massive effort that must be planned and executed according to established methods  There are many facts to the project lifecycle, and no single person can be an expert in each area Some best practices for implementing a data warehouse (Weir, 2002):  Project must fit with corporate strategy and business objectives  It is important to manage user expectations about the completed project  The data warehouse must be built incrementally  Build in adaptability
  • 3. Data Warehousing Implementation Issues  The project must be managed by both IT and business professionals  Develop a business/supplier relationship  Only load data that have been cleansed and are of a quality understood by the organization  Be politically aware
  • 4. Risk Factors Turban et al. (2006) listed the following reasons:  Cultural issues being ignored  Inappropriate architecture  Unclear business objectives  Missing information  Unrealistic expectations  Low quality
  • 5. Issues to Consider to Build a Successful Data Warehouse  Starting with the wrong sponsorship chain  Setting expectations that you cannot meet and frustrating executives at the moment of truth  Loading the warehouse with information just because it is available  Choosing a data warehouse manager who is technology oriented rather than user oriented  Focusing on traditional internal record-oriented data and ignoring the value of external data and of text, images, and, perhaps, sound and video
  • 6. Issues to Consider to Build a Successful Data Warehouse  Believing promises of performance, capacity, and scalability  Focusing on ad hoc data mining and periodic reporting instead of alerts