Database Constructs has released an upgrade to their medical practice management suite Med-Center. Version 4.0 offers full support for Mac OS X Tiger and adds a double entry accounting module that is fully integrated with patient charging and accounts receivable. Also new with this release is an updated database engine that improves speed, has fault tolerant crash and recovery technology, automatic client updates (for client/server version), registration as a Macintosh OS X Service, and more. Pricing for Med-Center 4 starts at US$550 for a single user license.