Recieving notification when a table changes

[anitajose]

Hi,
Is there any way to know when a change in table occurs for a postgresql table to the front end , VC++ ?

Please reply me soon.

Anita

[anitajose]

Hi,
Is there any way to know when a change in table occurs for a postgresql table to the front end , VC++ ?

Please reply me soon.

Anita

Please reply meeeee

[somaskarthic]

Hi

I'm not sure whether there exist some inbuilt methods for lastmodification datetime for a table .
But you can achieve this using triggers.
Let your table name be 'table1' and have one more table 'table_lastupdate_time'. If you insert,delete, or update any data in 'table1' ,
your trigger function should store the details in 'table_lastupdate_time'

Let the new table ('table_lastupdate_time') contain two fields,
1.tablename
2.last_action (timestamp).

The trigger function (on insert , delete or update )should update current_timestamp to the last_action field.

So, in your vc++ application you can retrieve the last_action time from ''table_lastupdate_time' table.

-somaskarthic

Hi,
Is there any way to know when a change in table occurs for a postgresql table to the front end , VC++ ?

Please reply me soon.

Anita