<div dir="ltr"><span
style="color:rgb(0,0,0);font-family:Verdana,Geneva,Helvetica,Arial,sans-serif;font-size:16.799999237060547px">Ihave an
oracleforeign table that holds arbitrary tasks, when a task gets updated the "time_update" field will change. I want to
detectwhen the field changes so I can insert the values in a local table for completed tasks. Can postgresql detect
changesin a foreign table so a trigger can be invoked? I am new to postgrwsql so any examples or education on what
stepsto take to complete tjos would be greatly appreciated!</span><br /></div>
