This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
Of the six use cases in the XQuery Update Facility Use Cases document, only one (Use Case Parts) says anything about the relationships between the various queries within a given use case. Use Case parts contains the sentence "Note that update effects are never cumulative, i.e. each update applies to the same [initial] state of the data." Some of the other Use Cases seem to assume that query n applies to the state of the data that exists after query n-1 has been applied. A concrete decision must be made on this question, even if the decision differs between Use Cases. If there is a document-wide decision, then it must be documented in some common text (e.g., the first two paragraphs of Section 1). If the decision varies by Use Case, then it must be documented in each of the Use Cases independently.
Only two of the use cases have more than one query. For Use Case "R", the updates are cumulative, for Use Case "Parts" they are not. Use case "Parts" already says that updates are not cumulative. I'll add a note to Use Case "R" to say that these updates are cumulative.