REFERENCES

Agrawal R., Gupta A., & Sarawagi, S. (1997). Modeling multidimensional databases. Proceedings of the 13th International Conference on Data Engineering (ICDE'97), Birmingham, UK, 232–243.

Birkhoff, G. (1979). Lattice Theory (3^rd Ed.). Volume 25 of Colloquium Publication. Providence, RI: American Mathematical Society.

Cabibbo, L., & Torlone, R. (1998). From a procedural to a visual query language for OLAP. Proceedings of the 10th International Conference on Scientific and Statistical Database Management (SSDBM'98), Capri, Italy. IEEE Computer Society Press, 74–83.

Chan, P., & Shoshani, A. (1981). SUBJECT: A directory-driven system for organizing and accessing large statistical databases. Proceedings of the 7th International Conference on Very Large Data Bases (VLDB'81), Cannes, France, 553–563.

Cruse, D. (1986). Lexical Semantics. Cambridge: CUP.

Codd, E.F., Codd, S.B., & Salley, C.T. (1993). Providing OLAP (On-Line Analytical Processing) to User-Analysts: An IT Mandate. Technical Report, E.F. Codd and Associates.

Dawey, B.A., & Priestley, H.A. (1993). Introduction to Lattice and Order. Cambridge, England: Cambridge University Press.

Gray, J., Bosworth, A., Layman, A., & Pirahesh, H. (1996). Data cube: A relational operator generalizing group-by, cross-tab, and roll-up. Proceedings of the International Conference on Data Engineering (ICDE'96), New Orleans, Louisiana, IEEE Computer Society Press, 152–159.

Hurtado, C.A., & Mendelzon, A.O. (2001). Reasoning about summarizability in heterogeneous multidimensional schemas. Proceedings of the 8th International Conference on Database Theory (ICDT'01). Lecture Notes in Computer Science, No. 1973. Springer-Verlag, 375–389.

Hurtado, C.A., & Mendelzon, A.O. (2002). OLAP dimension constraints. Proceedings of the 21st ACM SIGACT-SIGMOD-SIGArT Symposium on Principles of Database Systems (PODS'02), Madison, Wisconsin, 169–179.

Kimball R. (1996). The Data Warehouse Toolkit. New York: John Wiley & Sons.

Lehner, W., Albrecht, H., & Wedekind, H. (1998). Normal forms for multidimensional databases. Proceedings of 8th IEEE International Conference on Scientific and Statistical Database Management (SSDBM'98), Capri, Italy. IEEE Computer Society Press, 63–72.

Lenz, H.-J., & Shoshani, A. (1997). Summarizability in OLAP and statistical databases. Proceedings of 9th International Conference on Scientific and Statistical Data Management (SSDBM'97), Olympia, Washington. IEEE Computer Society Press, 132–143.

OLAP Council. (1997). The OLAP Glossary. Available on-line at: http://www.olapcouncil.org.

Pourabbas, E., & Rafanelli, M. (2000). Hierarchies and relative operators in the OLAP environment. Journal of the ACM SIGMOD Record, 29(1), 32–37.

Pedersen, T.B., & Jensen, C.S. (1999). Multidimensional data modeling for complex data. Proceedings of the 15th International Conference on Data Engineering (ICDE'99), Sydney, Australia. IEEE Computer Society Press, 336–345.

Rafanelli, M., & Shoshani, A. (1990). STORM: A statistical object representation model. Proceedings of the 5th International Conference on Statistical and Scientific Database Management (5th SSDBM), Charlotte, North Carolina. Lecture Notes in Computer Science, No. 420. Springer-Verlag, 14–29.

Smith, J.M., & Smith, D.C.P. (1977). Database abstractions: Aggregation and generalization. Journal of the ACM Transactions on Database Systems, 2(2), 105–133.