[sc34wg3] TMCL: 4.4.2, 4.4.4 , 4.4.5

[Robert Barta]

All these constraint where specially ear-marked topics can only be
used in a particular way (as assoc-type or occ-type or name-type) all
have a similar TMQL counterpart:

  uniq ( //tm:association >> types ) -- // tmcl:associationType == null

  uniq ( //tm:occurrence  >> types ) -- // tmcl:occurrenceType == null

  uniq ( //tm:name        >> types ) -- // tmcl:nameType == null

\rho

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Austrian Research Centers, Environmental Monitoring Systems
http://www.smart-systems.at/rd/rd_environment_en.html