eBay Inc.
Database access using a z-curve

Abstract:

Improved access of a multidimensional database can be implemented using a space-filling curve, such as a z-order curve, and a tree structure. A state engine is configured to track the state of the dimensions of the database as the tree structure is traversed. Different states allow optimizations such as avoidance of analyzing a dimension for further nodes of the tree and removal of multiple nodes in a sub-tree.