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<h2>DESCRIPTION</h2>
<em>v.db.connect</em> prints or sets database connection for a vector map.
<h2>NOTE</h2>
If parameters for database connection are already set with
<a HREF="db.connect.html">db.connect</a>, they are taken as default values and
do not need to be spcified each time.
<p>
<b>Attention:</b> Removing a vector map will also delete all tables linked to it! If
you use v.db.connect to link further tables to your map, it is advisable to
make a copy from those tables first and connect the copied tables to
the vector map (see also <a HREF="v.overlay.html">v.overlay</a>).
<h2>EXAMPLE</h2>
<em>Print database connection</em>
<br>
<b>v.db.connect -p map=</b><em>vectormap</em>
<p>
<em>Print column types and names of table linked to vector map</em>
<br>
<b>v.db.connect -c map=</b><em>vectormap</em>
<h3>Connect vector map to database (DBF driver)</h3>
<em>Connect vector map to database with variables</em><br>
Using default DB connection:<br>
<b>v.db.connect map=</b><em>vectormap</em> <b>table=</b><em>table</em>
<p>
Using hardcoded path to DBF directory:<br>
<b>v.db.connect map=</b><em>vectormap</em> <b>table=</b><em>table</em>
<b>database=</b><em>/home/user/grassdata/spearfish60/PERMANENT/dbf</em>
<p>
Using variable as DBF directory definition, single quotes must be used:<br>
<b>v.db.connect map=</b><em>vectormap</em> <b>table=</b><em>table</em>
<b>database=</b><em>'$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/'</em>
<p>
<em>Connect vector map layer 2 and key ID to database with variables</em><br>
(note: if needed, single quotes must be used for the <em>database</em> parameter)<br>
<b>v.db.connect map=</b><em>vectormap</em> <b>table=</b><em>table</em>
<b>layer=</b>2 <b>key=</b><em>ID</em>
<h3>Connect vector map to database (PostgreSQL driver)</h3>
<b>v.db.connect map=</b><em>vectormap</em> <b>table=</b><em>table</em>
<b>layer=</b>1 <b>key=</b><em>oid</em> <b>driver=</b><em>pg</em>
<b>database=</b><em>"host=myserver.itc.it,dbname=mydb,user=name"</em>
<b>table=</b><em>mytable</em> <b>key=</b><em>id</em>
<h2>SEE ALSO</h2>
<em>
<a HREF="db.connect.html">db.connect</a>,
<a HREF="db.copy.html">db.copy</a>,
<a HREF="v.overlay.html">v.overlay</a>,
</em>
<h2>AUTHOR</h2>
Radim Blazek, ITC-Irst, Trento, Italy
<p><i>Last changed: $Date: 2005/10/20 15:20:01 $</i>
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