1. A lease data management computer, hardware system comprising: one more processors; a tract-base lease data management system, said data management system comprising a set of tract entities; a storage repository for spatial features, wherein said storage repository is a client-server database; logic instructions for linking a spatial feature to a tract entity; logic instructions for building a lease spatial feature for a lease entity, wherein logic instructions for building the lease spatial feature for the database entity comprises: instructions for determining a subset of tract entities associated with the lease entity; instructions for determining a set of tract spatial features representing the subset of tract entities; and instructions for combining the set of tract spatial features to build the lease spatial feature; logic instructions for detecting if a spatial feature for a database entity in the tract-base lease data management system is invalid; and logic instructions, in response to detecting if the spatial feature for a database entity in the tract-base lease data management system is invalid, for building a valid spatial feature for the database entity.