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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.

Example of a relational database query (101845 bytes)

arrow2l.jpg (1149 bytes) Back to Relational Databases

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