According to one embodiment of the present invention, a system merges documents, and comprises a computer system including at least one processor. The system receives an update document including one or more updates for a target document arranged according to a document schema defined by schema information. Update information includes one or more paths to nodes within the document schema, and is examined to identify eligible paths for the updates. The updates from the update document associated with the eligible paths are applied to the target document in accordance with the schema information to produce an updated document in compliance with the document schema. Embodiments of the present invention further include a method and computer program product for merging documents in substantially the same manner described above.