Backend storage for an LIR IP mgmt system

Hi all, As you may remember from an earlier message. We are currently working on an open source LIR IP address management tool and would like your feedback on the following question. What is the preferred choice of backing storage (database) for the IP allocations and pertaining information? We currently have implemented an XML2 backend and a Berkeley DB backend, and intend to add LDAP (actually OpenLDAP)? Would anybody strongly want something else? and why? ~benm -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Ben Martel Symmetric Systems Ltd Ph: +64-21-541202 Email: benm at symmetric.co.nz