Created on March 13, 2013, 12:22 p.m. by Hevok & updated by Hevok on May 2, 2013, 4:42 p.m.

Data can be found on the Web and its available on some Web Sites and/or in Database where it is mostly inside Tables. Usually one has a Web Server that delivers an HTML Page to the Browser. The Delivery works with HTTP. The Database is usually connected to the Web server and transfered to the User via HTTP.

Data Islands

How to access data? Usually there is a number of different an proprietary Web Application Interfaces, data exchange formats. One can combine these data in Mashup Application, but one has to use several different and proprietary APIs. The Problem is as soon as the exchange format or the Interface Definition changes somehow, then one has to rewrite the entire Application. The more different APIs one is using the more complex the Task will be. For example Google is not able to use the Index ad Catalog of Amazon and vice versa. Although they have their own database they do not share this database with the public. And when they do it, they do it in rather a controlled way. The Data can not simply be combined and then published a new and enriched Content.

The Problem is that the data is locked up in small kind of Data Islands and usually other Applications can not use these Data simply by transforming or translating the Data to RDF and OWL and then publish it as RDFS based data and then one can draw connections from one data source to data from another source. In the end one comes up with Linked Data.

Semantic Technologies

How to Get Rid of Closed Data Islands on the Web? The Solution to the Data Island problems are Semantic Technologies. One can use Semantic Technologies to publish structured Data in the Web.

  • Data can only be found on the Web if it is available at some Website
  • There is a number of different (proprietary) Web APIs, Data Exchange Formats, and Mashups on top
  • Data is locked up in small Data Islands
  • Other Applications usually cannot Access this Data...
  • Apply Semantic Technologies:
    • to publish structured Data on the Web
    • to draw Connections from one Data Source from other Data Sources

Tags: web, information
Categories: Concept

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