Storing Multidimensional XML documents in Relational Databases

Abstract. The problem of storing and querying XML data using re-lational databases has been considered a lot and many techniques have been developed. MXML is an extension of XML suitable for represent-ing data that assume different facets, having different value and structure under different contexts, which are determined by assigning values to a number of dimensions. In this paper, we explore techniques for storing MXML documents in relational databases, based on techniques previ-ously proposed for conventional XML documents. Essential characteris-tics of the proposed techniques are the capabilities a) to reconstruct the original MXML document from its relational representation and b) to express MXML context-aware queries in SQL.