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1/23/2015  UT Dallas

POEC 6382 Applied GIS Software

35

RELATE versus JOIN

Advantages of RELATE

Operations on coverages with extended feature attribute tables take more time and machine resources.  

Can make the updating process easier and faster because it keeps descriptive data segregated from the spatial data.  Can replace the attribute data regularly.

Allows separate departments in an organization to access the same coverage while keeping their own descriptive data available in separate files.

Relating data allows you to keep some of your data in another RDMBS, such as Oracle.

Advantages of JOIN

Simpler for projects of small scope.

When files are joined, there are fewer files and relationships between files to keep track of.

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