How to plot a graph with the values from a newly added table?

[rajbal]

Hi Alexei and all,
Apart from monitoring system resources i am monitoring the response of a URL.With my shell script i am getting the response time and size and storing the values to the Zabbix database(mysql).The table structure will be as shown below:
tbl_urlresponse
----------------
urlid
clock
value

tbl_urlsize
-----------
urlid
clock
value

I want to plot the stored value of response time in one graph and the size in another graph .Just fetch the value and plot in a graph.Can you tell me which part of the code i can use just to plot the graph of a databse tables.

Regards,
Rajesh