| Lake Pontchartrain Basin: Bottom Sediments and Related Environmental Resources |
Figure 1. Example of a relational database query.
The lines connecting the "Unique_ID" fields are depicting the
relationships between these tables. Below the relationships box is an example of a query
that relies on these relational tables.
U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/pp/p1634j/html/dbquery.htm
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Last modified: 16:03:04 Thu 27 Jun 2002
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