I. INTRODUCTION

II. MULTIDIMENSIONAL INDEXING STRUCTURES
   A. Skip Lists
   B. Skip Graphs
   C. Space Filling Curves
   D. Locality Preserving Hashing
   E. Space Partitioning

III. DIMENSIONAL COMPLEXITY
   A. Dimensional Message Complexity
   B. Dimensional Storage Complexity
   C. Load Balance
   D. Robustness
   E. Concurrency

IV. SECURITY

V. CONCLUSION