A widely known problem of commercial database systems is their lack of support for "scientific" applications. This is in part derived from their inability to deal with some data types such as arrays. It is the purpose of this research to make possible the full manipulation of array types using the query language for an OODB. The proposal is to use the Monoid Comprehension Calculus (MCC) [11], properly augmented, to support array types. The approach is to define arrays as functions instead of specifying them directly as monoids. This overcomes significant disadvantages of previously reported approaches. We present some examples of queries involving intensive manipulation of arrays in the context of image processing. 1 Introduction Object oriented database technology has reduced the impedance between programming languages and databases. In large part, this is due to the introduction of collections, some of which are recognizable abstract data types frequently employed in scientific pro...