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Abstract
Intended message to the hierarchical division of the large databases through 6 chapters and through the study were presented and the study of the above work to implement the division by using algorithms and study the fragmentation of the foregoing acts of using hierarchical methods and techniques in the process of hierarchical partitioning of the database and produces a hierarchy is a way of Agnes and style Diana of the oldest methods for the process of hierarchical division of the databases, but unfortunately had some mistakes in the techniques and results and that other methods have been developed using more complex criteria such as the Cure, Birch, Chameleon.