International Journal of Modern Engineering Research (IJMER)
Skyline is used in a distributed database, because the database will not be in one system. It will be stored in multiple systems reside at different locations, if it is connected using internet. A Query is called as \"Skyline\", which query works or execute based on data points. \"Skyline\" query returns many multidimensional points. It extracts the information from different places of distributed database at different sites. Skyline query returns all the interesting points that are not dominated by any other points. Skyline queries play an important role in multi criteria decision making and the user preference applications. For example, a tourist can issue a skyline query on a hotel relation to get those hotels with high stars and cheap prices.