Essay on Evaluation Of User Requirement Analysis Of Data Warehouse Design

Essay on Evaluation Of User Requirement Analysis Of Data Warehouse Design

Length: 719 words (2.1 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

Evaluation of User Requirement Analysis in Data Warehouse Design
1.0 Introduction
A data warehouse (DW) can be acknowledged as one of the most complex information system modules available and it is a system that periodically retrieves and consolidates data from the sources into a dimensional or normalized data store. It is an integrated, subject-oriented, nonvolatile and a time-variant collection of data in support of management’s decisions (Inmon, 1993).
1.1 Data Warehouse Design Process
When considering the suggestions of various authors who are well known in the field, such as William Inmon and Ralph Kimball the DW design process can be divided into three main stages (Figure 1).






The first phase which is DW planning is aimed at determining the scope and the objectives of the DW. The second phase will be concentrating on individual data marts (DM) and will be repeated for each DM to be implemented. And according to the Figure 1, the second phase can be further divided into five distinct main phases. The final phase will focus on performance optimization and keeping the DW schema up-to-date.
In DW lifecycle, one of the most crucial phases that might affect all other phases of DW development is the Requirement Analysis phase. It is a process of collecting requirements from end user. The goal of this phase is to identify organizational objectives and elaborate requirements that could measure organizational performance. However, DW projects are complex, inherently risky and some of them fail in the implementation. According to studies more than 80% of DW projects fail to fulfill business goals.
One of the main reasons behind the failure of DW is the incompetence in analyzing user requirements. Kimball et al. (2008) indicated...


... middle of paper ...


...ta in data source. So it is easier to construct DW schema and at the same time ensure the availability of data. Since data-driven approaches start with the available data, this methodologies are suitable when detailed knowledge of data sources is available. The data-driven approaches require normalized data, so in order to successfully use these methods the source schema should exhibit a decent degree of normalization.
In practice, when the chosen data source for the DW relies on a reconciled, well-designed and not very large single relational operational database these requirements are largely satisfied: in fact, normalization and detailed knowledge are guaranteed by the source integration process. The same holds, thanks to a careful source recognition activity, in the frequent case when the source is a single relational database, well-designed and not very large.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Essay about An Evaluation Of Requirements Engineering

- As more companies that are leading technology are transforming from the traditional waterfall development model to an Agile software methodology, requirements engineering provides a process for software engineers to understand the problems they need to solve (Martin, Newkirk, & Koss, 2014). It is of key importance to understand the customer 's wants and needs before beginning designing or building the computer-based solution, as developing a solution that ignores the customer’s needs provides value to none of the parties involved....   [tags: Requirements analysis, Software requirements]

Better Essays
1478 words (4.2 pages)

Evaluation Essay

- Our Session Long Project (SLP) for Module 1 transforms the evaluation essay into a job evaluation. The type of job evaluation used in this SLP identifies the responsibilities of the job and bases the individual’s performance on these responsibilities. What does this mean to the employee; it means that if they understand the responsibilities of their job they are better able to perform it to the satisfaction of the evaluator. However employees who are not informed of their responsibilities can invalidate your evaluation process very quickly and wreck havoc in any organization....   [tags: Business Management ]

Better Essays
966 words (2.8 pages)

Development of Performance-Based Mixture Design Method Essay

- CHAPTER 1 INTRODUCTION 1.1 General Nowadays, the basic construction material is concrete which is used more than any other man-made material in the world to make pavements, architectural structures, foundations, roads, bridges, etc. Concrete is a construction material composed of cement (commonly Portland cement) as well as other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate such as gravel, limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures (such as accelerating admixtures, air-entraining admixtures, water-reducing and set-controlling admixtures, finely divided admixtures, polymers for polymer-modif...   [tags: Construction]

Better Essays
1659 words (4.7 pages)

Responsibilities And Responsibilities Of A Teacher Change With Time And Circumstance

- Understanding the roles, responsibilities and the relationships in education and training In this diverse world, the roles and responsibilities of a teacher change with time and circumstance. It is impossible to set a fixed definition of either as they change continually. However, there are some roles and responsibilities that are common to all trainers in education system to facilitate the learners’ achievement and success. According to Gravells(2014,p3) the five stages in teaching/ learning cycle i.e....   [tags: Education, Assessment, Evaluation]

Better Essays
841 words (2.4 pages)

Essay about Evaluation Approach Evaluation Design Evaluation

- This chapter presents the methodology applied in the evaluation. It discusses the evaluation approach, evaluation design, evaluation period, study population, unit of analysis, variables and their measurements, sample size and sampling techniques, types and sources of data, data collection methods, validity issues, data management and analysis methods and ethical issues. 3.2 Evaluation approach According to Görgens-Albino and Kusek (2009), there are several evaluation approaches which include formative, process, outcome, economic and impact evaluation....   [tags: Evaluation, Evaluation methods]

Better Essays
1042 words (3 pages)

Principles of Building Information Modeling Essay

- ... This progress could prove well the concept stage. Maintenance of information and design model integrity: BIM Capable to achieved this because it store information for each pieces once, without iteration in drawing system ; because the same design information is stored in multiple drawing views such as plan, elevation and detail sheet. It is possible to integrating different models into software tools to compare them automatically or manually. Searching in a certain section in the model for clashes between trades can immediately find which models collided....   [tags: design, construction, software]

Better Essays
1064 words (3 pages)

Service Marketing Critical Issues Evaluation Essay

- 1. Introduction In today’s economy, the feature of a company’s support/customer service can signify the difference among success and failure. Good service translates into better customer loyalty, which in turn translates into higher profits and customer profitability. Companies should have strong service management team that can provide and manage the information which is needed to deliver world-class service support as well all the other additional products and services which may require by client as per their business need while delivering incomparable customer satisfaction....   [tags: Business Analysis ]

Better Essays
2625 words (7.5 pages)

Evaluation of Design of a Data Capture Sheet Essay

- Evaluation of Design of a Data Capture Sheet For task one I was asked to design a data capture sheet for new customers to fill in with their information and to build a database for the Megavideo employees to fill in with the customer's details. I had to make an input mask for the telephone number, a validation rule for gender, set a default value for county and finally had to create a report of all the Megavideo members. The target audience for my data capture sheet was the new Megavideo customers as they would have to fill it in and the target audience for my database was the Megavideo employees as they would be using the database to search for detail, add new m...   [tags: Papers]

Free Essays
543 words (1.6 pages)

Essay on Outcome Evaluation of the Savvy Caregiver Program

- The experimental design that will be used for this outcome evaluation will be a time-series design. Savvy Caregiver participants will be assessed upon initial enrollment into the program, then again immediately after completion of the program, then once again 1-month after completing the program. This experimental design “allows the evaluator to detect trends.If there is a trend in the data, this gradual process would apparent. It could be observed prior to the start of the intervention and monitored afterward” (Royse et al, 2010, p....   [tags: data analysis, experimental design]

Better Essays
1297 words (3.7 pages)

Evaluation Of The Experimental Design Lab Essay examples

- 9th Grade Science During the 1st quarter of 9th Grade Science the class has focused on learning the scientific method, measurement techniques, and an introductory study of motion. Formative assessments included many practice questions involving the use of formulas and calculation, identifying variables, hypotheses and predictions, and questions from our lab experiments. Summative assessments for the quarter were the lab report for the experimental design lab and the unit test on the concept of motion....   [tags: Experiment, Science, Scientific method]

Better Essays
1131 words (3.2 pages)