Data Warehousing and the Web

Running Head : DATA WAREHOUSE - WEB

DATA WAREHOUSE

WEB

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DATA WAREHOUSE

WEB

Today , many of us use computers and the World Wide Web to communicate We enter a website name or address into a browser on our computer , where a unique numerical number replaces the words representing the website name or address . This allows us to access any document (web page ) on that computer . The internal is capable of connecting with any computer anywhere in

the world . Now , in a different way , let 's consider the reason why it is difficult for computer systems to communicate and to share data , first , the data often have been structured differently in one system that in another . This is particularly true with older application systems . Second , the data may not be stored in the same format . Third the name of the data may be different , causing a problem in identification or recognition of what they represent between systems

The web has become a huge repository of information and keeps growing exponentially under no editorial control , while the human capability to find , read and understand content remains constant . Providing people with access to information is not the problem the problem is that people varying needs and preferences navigate through large web structures , missing the goal of their inquiry . Web data personalization is one of the most promising approaches for alleviating this information overload , providing tailored web experiences

The explosion of the number of users on the web and the increasing number of web servers worldwide are rapidly advancing web data management . Users can access various information sources on the web There is no single technology for web data management . It is a combination of many technologies including heterogeneous database management , query management , intelligent agents and mediators and data mining . For example , the heterogeneous information sources have to be integrated so that users access the servers in a transparent and timely manner . Security and privacy is becoming a major concern for web data management . So are other issues such as copyright protection and ownership of the data . Policies and procedures have to be set up to address these issues

Supporting technologies for web data management

Web warehousing : Date warehouse solutions which use the World Wide Web are called web warehousing . The World Wide Web provides a huge source of information for the enterprise as well as an easy and fast data distribution and communication medium information collection and integration into the data warehouse is also called web farming . The internet is used for data access to external data while enterprise-internal data and information distribution and access is supported by intranets . Nets for data and information exchange between cooperating enterprises , and from and into their intranets are called extranets

Database systems . There are different database technologies that are applicable to a data warehouse . They must have the ability to process huge amounts of data arising from a large variety of different detailed , aggregated...