topic Re: Internal id's and user-id's in geodatabases in Data Management Questions

Internal id's and user-id's in geodatabases

JohnBarnes — Tue, 05 Feb 2013 20:46:12 GMT

Have coverage internal id's and user-id's been replaced by the geodatabase ObjectID?

Whenever I create a new Feature Class in a geodatabase I get no internal id's or user-ids only ObjectID's?

Are internal id's and user-id's needed anymore? Feature Classes imported into a geodatabase from an ArcInfo coverage, can the internal id and user-id fields be deleted? Whate about the FNODE, TNODE, RPOLY and LPOLY for that matter?

jb

Re: Internal id's and user-id's in geodatabases

VinceAngelo — Tue, 05 Feb 2013 22:52:08 GMT

Technically, the column is a "registered rowid". There is no requirement that it be
named "objectid", but Desktop doesn't make it easy to name it something else
from the user interface.

The COV# and COV-ID columns were artifacts of how ArcInfo coverage topology
worked. They are not necessary in shapefile, personal geodatabase, file geodatabase,
or ArcSDE tables, nor are FNODE#/TNODE#/LPOLY#/RPOLY#.

- V

Re: Internal id's and user-id's in geodatabases

JohnBarnes — Wed, 06 Feb 2013 19:33:52 GMT

Vince,

Thanks,

That is what I thought.

jb