Hello everybody, I'm new here on the site and for two days I have been searching without finding solution.

I have the following tables:

TbFinal - Access 2010
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NuContrato DtContrato
119 Null
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TbContrato - Sybase
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NuContrato DtContrato
111 '20151003'
112 '20151004'
113 '20151005'
114 '20151006'
115 '20151007'
116 '20151008'
117 '20151009'
118 '20151010'
119 '20151021'
----------------------------------

I've done the code that performs the connection to the Sybase server and also I have read the tables (Count, Sum, etc.)

My difficulty lies in properly create the SQL Statement as Refresh DtContrato the Contract 119 based on TbContrato (Sybase)
and also what command I use to run the statement.
I tried as follows: "UPDATE TbFinal SET a.DtContrato = b.DtContrato TbFinal FROM a, b WHERE a.NuContrato TbContrato = b.NuContrato"

Someone there can help me?