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The view-object model provides a formal basis for representing
and manipulating object-based views on relational
databases. In this paper, we present a scheme for handling
update operations on view objects. Because a typical view
object encompasses multiple relations, a view-object update
request must be translated into valid operations on the underlying
relational database. Building on an existing approach
to update relational views, we introduce algorithms
to enumerate all valid translations of the various update operations
on view objects. The process of choosing a translator
for view-object update occurs at view-object generation
time. Once chosen, the translator can handle any update
request on the view object.