A database model is the theoretical foundation of a database and fundamentally determines in which manner data can be stored, organized, and manipulated in a database system. It thereby defines the infrastructure offered by a particular database system. The most popular example of a database model ...
[I originally posted this on dba.stackexchange.com but they suggested I ask here. Thx] Are the following geographic hierarchies correct? Do any US/Canadian area codes cross state/province lines? Do ...
How do I add transportation schedules to a multimodal network dataset? For example, Bus 1 runs between 08:00 and 16:00, and Bus 2 between 14:00 and 23:00. If a passenger wants to solve for a route ...
I need to create a design for a spatial database. I've found this list http://wiki.postgresql.org/wiki/GUI_Database_Design_Tools, but it seems to me that this software is orientated towards a regular ...
Having Oracle dbms with ArcSDE and ArgGIS Pipeline Database Model (APDM), I would like to best describe the system with a diagram. In MS SQL each db is autonomous, I think, meaning ArcSDE(using dbo ...
Over the past couple of months, I have seen a few esri-geodatabases and they seem to be either a text field with a length of 20 or 30. Is 30 the maximum field length? Clarification: The answer I'm ...
I used to model databases with Microsoft Office Visio, then export the model to xml and import geodatabase schema to GDB with ArcGIS tools. Since Microsoft no longer support Visio export to xml, what ...