In formation Retrieval We deal with several types of information and the structure of information in databases which may contain qualitative descriptive, quantitative valued or graphical information. Decision making may be based either upon answering what-if questions. A better approach would be creation of and optimization of an objective function. Different types of information need different retrieval strategies.
Related information is located in the database rows.
Each columns represents different variables or attributes. The location of every piece of information is known exactly . Sound, Images, Geographical Positions and Molecular stuctures Data retrieval is based upon the content of sound, images or location. There are also three types of data retrieval to consider. Each type has is own result reporting system, Push and Pull methods makes use of a small database which contains stored precalculated information extracted from a much larger raw data database.