Role of Access Control Based On Search Technologies
Each of us has been faced with the issue of searching for information more than once. I regardless of the data source we are using Internet, file system on our hard drive, data base or a global information system of a big company the problems can be multiple and include the physical volume of the data base searched, the information being unstructured, different file types as well as the complexity of accurately wording the search query. We have already reached the stage once the amount of data on a single PC is comparable to the amount of text information stored in the right library. And as to the unstructured information flows, in future they are only likely to increase, and at a really rapid tempo. If for a normal user this might be only a minor hardship, for a huge company lack of control over information can mean important issues.
Therefore, the necessity to make search technologies and systems simplifying and accelerating access to the essential information, originated long ago. Such systems are numerous and moreover not each one of these is based on a special technology. And the task of selecting the right one depends upon the specific tasks to be solved in the future. While the requirement for the ideal data searching and processing resources is steadily growing let us think about the state of affairs with the distribution side.Not moving deeply into the various peculiarities of this Technology, all the hunting systems and programs can be divided into three groups. These are: global Internet systems, turnkey business solutions corporate information searching and processing technologies and easy phrasal or document search on a local computer. Various directions presumably imply different solutions.
Local search
Everything is clear about hunt on a local PC. It is not Remarkable for any specific functionality features except for the selection of file type media, text etc. and the search destination. Simply enter the name of the searched file or part of text, such as in the Word format and that is it. The rate and result depend entirely on the text entered into the query line. There is zero intellectuality in this: simply looking through the available files to specify their significance. This is in its sense explicable: what is the use of making a sophisticated system for such uncomplicated needs.Matters stand completely different with all the search systems Operating in the international network. An individual cannot rely only on looking through the available data. Tremendous volume Yandex for example can boast the indexing capacity of over 11 terabyte of information of the international chaos of unstructured information is likely to make the easy search not just inefficient but also long and labor-consuming. That is why recently the focus has changed towards optimizing and enhancing quality attributes of search.
