An approach for propagating changes from a database to a client includes
providing to the client a copy of a portion of the database, wherein the
portion of the database contains a first data item. An updated value of
the first data item is generated that reflects the application of a
plurality of changes to the first data item. The updated value of the
first data item is provided to the client with operator data that
indicates one or more operations to be performed to update the copy of
the portion of the database at the client with the updated value of the
first data item. As used herein, the term "data item" may refer to any
type of data. For example, in the context of database systems, a data
item may be an individual value, a database record containing several
values, e.g., a row, a database table, or a group of database tables.