On the updatability of network views—extending relational view theory to the network model

摘要

This paper studies the problem of supporting network views. First, an abstraction of the existing network data models is introduced. A non-procedural calculus-based language for data manipulation and view definition in the network model is described. Then, a functor that transforms network schema and view extensions, operations and constraints into equivalent relational ones is defined. This serves as a vehicle for transporting the theory of view update translation in the relational model to views in the network model.