Incremental Evaluation of Schema-Directed XML Publishing

When large XML documents published from a database are maintained externally, it is inefficient to repeatedly recompute them when the database is updated. Vastly preferable is incremental update, as common for views stored in a data warehouse. However, to support schema-directed publishing, there may be no simple query that defines the relationship between the database and the external document. To meet the need for efficient incremental update in this case, this paper investigates two approaches for incremental evaluation of ATGs [4], a formalism for schema-directed XML publishing. The reductiom approach seeks to push as much work as possible to the underlying DBMS.