International Journal of Computer Applications
Metric spaces are very useful in spatial database, and other applications that deal with it. Especially when want to found object that are similar to other object. This condition does not handle the relative position that found in some tree, such that, R-Tree, R+-Tree, and R-Tree. Instead of handling distances between objects, using euclidean distance to compute the similarity between them, and retrieve the sets of object from database based on Euclidean distance that make this situation is happen and occurs.