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The following sequence diagram illustrates the use of the ResourceQueryService to query schema information. This sequence
should be compared with that of
Section 3.5,
“Query Sequence,? on page 3-15. The client begins by obtaining resource identifiers for
Class, Property domain, range, and label metadata. These resource identifiers may then be used in schema queries. For example,
to ask for the names of all classes the Class and label resource identifiers are passed to the get_extent_values() query.
client id service : Resource query service : ResourceQuery IDService Service