Describe differences for QueryDatabaseTable between 0.x and 1.0

QueryDatabaseTable was refactored to support a common interface (DatabaseAdapter) between some DB-related processors that need to know the "type" of database, either for SQL generation or whatever. Since QueryDatabaseTable exists in 0.7.x, documentation is needed to describe the changes that need to be made between "SQL Preprocessing Strategy" and "Database Type". In the former property the choice is "None" or "Oracle"; in the new system that property is invalid and the new one offers a choice of "Generic" or "Oracle".