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)Mario A. Nascimento Margaret H. DunhamCNPTIA -- EMBRAPA CSE -- SEASPO Box 6041 Southern Methodist University13083--970 Campinas SP BRAZIL Dallas TX 75275--0122 USAmario@cnptia.embrapa.br mhd@seas.smu.eduABSTRACTIn this paper we address the problem of indexing spatial data,in particular two dimensional rectangles. We propose anapproach which uses two B+-trees, each of them indexingthe projected sides of the given rectangles. The approach,which we name 2dMAP21, can also be...

Using two B + -trees to efficiently process inclusion spatial queries (extended abstract)

Using two B ⁺ -trees to efficiently process inclusion spatial queries (extended abstract)