database collation "C" and "C.LATIN1"

Hi,

  We create one database with collate= “C.LATIN1”, any difference between “C” and “C.LATIN1” ?    database encoding is “LATIN1”.

oid  |        collname        | collnamespace | collowner | collprovider | collisdeterministic | collencoding |   collcollate    |    collctype     | collv

ersion

-------+------------------------+---------------+-----------+--------------+---------------------+--------------+------------------+------------------+------

-------

  950 | C                      |            11 |        10 | c            | t                   |           -1 | C                | C                |

12328 | C.latin1               |            11 |        10 | c            | t                   |            8 | C.latin1         | C.latin1    

Thanks,

James