Name
update -- update a database table
Synopsis
update(table, a)
Parameters
- table
-                   Name of table.
                 
- a
-                   A dictionary of values.
                 
Return Type
- integer
-                   The OID of the newly updated row.
                 
Description
          Similar to insert but updates an existing row.  The update is based
          on the OID value as munged by get.  The array returned is the
          one sent modified to reflect any changes caused by the update due
          to triggers, rules, defaults, etc.