Help for maintain DHCP server functions and dhcpd.conf

http://wiki.osuosl.org/display/Maintain/Maintain+Module+Search+Functions

1) I want know that is there any  functions in Maintain through i can manuplate database. Fetch data from database or insert database. and it  also be directly effect in  'dhcpd.conf'. That functions i can use as web service.

2) Is there any  way that without  restart DHCP we well get  effect of change in  'dhcpd.conf' file.