Algorithms Insertion   If no space in leaf bucket, choose a split line and create two buckets   Cycle through dimensions.   Dimension with largest range.   Corresponding bucket entries are updated in parent   May lead to parent over flow and so on   Height increased only at root Deletion   Many deletions may result in very low space utilization   Find another page that is joinable   Same parent.   Forms a hyper-rectangle.   Does not over flow Point queries   Recursively nd child region, starting from root