Patent ID: 8190645

Claim:
A method of linking data in a field-accessed database system, the field-accessed database system comprising a first field terminal, a database, and a system server, the method comprising: said first field terminal being used to select a physical object; said first field terminal establishing an object state vector for said physical object; said first field terminal collecting object data to produce a first object data product comprising said object data; storing said first object data product in said first field terminal; said system server or said field terminal selecting a set of focus data products from a plurality of focus data products stored in said field-accessed database system, each focus data product comprising a respective focus state vector, each element of said set of focus data products selected based on whether the element's respective focus state vector satisfies predetermined relationship criteria with respect to said object state vector, wherein said set of focus data products is represented as an index stored in said field-accessed database system, said index comprising links to each element of said set of focus data products; uploading from said first field terminal to said database said first object data product and storing said first object data product in said database; linking said first object data product in said database to a focus data product selected from within said set of focus data products, said linking accomplished by establishing a link in said focus data product, said link comprising sufficient data to identify said first object data product in said field-accessed database system.