Zillow Case Study Essay

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Introduction
In this case study, the business of Zillow.com in providing real estate information to all users to its website is explored, and the use of business intelligence by Zillow.com in its offering to customer, and the way it uses a data mart to market its new product, are discussed. In addition, this case study includes a discussion of various characteristics of information quality as seen from Zillow’s perspective, and how Zillow is using a data-driven website.

Analysis
Background of Zillow.com
Zillow.com is an online web-based real estate site helping homeonwers, buyers to find and share information about real estate and mortgages. It allows users to access information anonoyoumously and free of charge, using the kinds of tools
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The database contains data and information related to the systems, including the details of the users and the transactions, while the DBMS creates, modifies, and delete data in the database, as well as maintaining access control and data security.
Zillow’s business is to provide information on real estate and mortgages. It recognizes that it needs to make its data accessible, scalable, reliable, and secure with high level of performance, and a relational database would provide the business advantages of meeting these needs, through increased flexibility, increased scalability and performance, reduced redundant information, increased information quality, and increased information security (Baltzan,
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Although there is one physical copy of the data, mulitiple logical views could be created according to the needs of the individual users. In addition, users could save customized view of their choice, so that the next time they access the Zillow system they would save time by looking at only what matters to them. Second, the technical capability of the databases currently available enable exceptional scalability, allowing users and programs to perform computational demanding tasks and complex searches. Third, by recoding each piece of data only in one location and allowing data association through relational data tables, there is one single view of truth and data modification and deletion could be performed without risk of creating redundant out-of-date data.
Fourth, with a relational database, integrity contraints (both relational and business-critical) helps a company enforce business rules that ensures high information quality which provide better business decision support. Fifth, databases offer security features such as passworeds authentication, access level authorization. With cloud computing, the risk of data breach increases, so sound data governance policies and procedures help companies defend against information security threats (Baltzan,

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