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Thinking about Discovery

FIGURE 9.6
SRU Subject Query

1. Dublin Core Query: http://lx2.10c.gov:210/LCDB?ope
ration=searchRetrieve&version=1.1&query=dc.subject
=%22columbus%200hio%22&recordSchema=marcxml&
startRecord=1&maximumRecords=5
2. Bath Query: http://lx2.10c.gov:210/LCDB?operation=
searchRetrieve&version=1.1&query=bath.subject=%22
columbus%200hio%22&recordSchema=marcxml&startR
ecord=1&maximumRecords=5
In both cases, the subject request would return the record shown in figure
9.6. One might also notice that the record in figure 9.6 is in MARCXML.
This is defined through the use of the recordSchema argument in the query
URL. Like the context sets, the supported record schemas are also defined in
the EXPLAIN request. In the case of the Library of Congress’s SRU server,
the following recordSchemas are supported: marcxml, dc, and mods.
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