how to store data into database

In recurring event what type of parameter we can pass for event_pid,event_length…
what are the recurring event parameters and what are all the normal event parameters…
we have the extra fields like state,zip ,address…after adding these fields how to store data into database …how we can see the data into browser

If you are using custom data saving for recurring events, you need to save at least

text
start_date
end_date
rec_type
event_length
event_pid

Basically you can take values from js event object and save it as it , without any converting.

docs.dhtmlx.com/doku.php?id=dhtm … ntegration

Is any reason, why you prefer to use custom data saving, instead of built-in one?