Abstract: The present invention extends to methods, systems, devices, and computer program products that advantageously provide for indexing composite keys (i.e., keys for space-filling curve) of multidimensional data storages into the form of an affixation tree or trie. More specifically, example embodiments provide for the organization or indexing of records of multidimensional data into instances (or partitions) of a “cascade” data structure augmented by a key affixation—i.e., a predetermined series or string of bits or bytes that appear before, after, and/or within a designated bit stream or composite key.