A collaborative data management system for engineering, design, and construction (EDC) projects is presented. The system includes a storage medium, a processor, executable code, a display, and an input device. The storage medium stores a plurality of EDC data objects and a plurality of relationship objects. The EDC data objects represent parameters relevant to EDC projects. The relationship objects represent relationships between EDC data objects. The processor and executable code are communicatively coupled with the storage medium and are configured to (i) display the relationship objects on the display and (ii) allow a user to manage synchronization of the EDC objects with the input device.