Here's a challenging project that I can't figure out how to solve in FME
  1. I have a parcel shapefile with APN (Assessor Parcel Number)
  2. I have a table tblParceDoc containing two fields: APN and DocNo.  The latter field is a reference to a Record map, survey, or parcel map.  A single parcel may have serveral different documents, a given document may cover several parcels
  3. I have a table tblDoc with a uniuqe field [DocNo] with other attributes pertaining to the document
  4. Here is the relationship between the tables
Parcel                                  tblParcelDoc                                        tblDoc
[Shape]
[APN] <-----1 to M--------> [APN]
                                              [DocNo]  <----M to 1 --------------> [DocNo]
 
What I'd like to get is a UNION of all parcel shapes for each unique [DocNo]
 
In Arcview, I can link the three and for each record selection in tblDoc, select all parcels in the shapefile.  I can manually do a Union for each
shape, but this is obviously not an efficient method. 
 
Any advice would be appreciated.
 
--Bill

William G Voigt           (415) 485-3366 voice
GIS Analyst               (415) 485-3334 fax
Dept Public Works         111 Morphew St
City of San Rafael  San Rafael, CA 94901

 
 
 
 


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