DESCRIPTION
 
v.db.reconnect.all changes database connection of all layers
of all vector maps in the current mapset from the source
(old_database) to the target (new_database) database. If
a link does not match the old_database it is left untouched.
If no new database is given, the default datase of the mapset is used as 
printed by db.connect -g. If no old database is given, all 
layers without a link in the new database will be liniked to the new 
database. If an old database is given, only links in the old database 
will be changed.
Optionally attribute tables in new_database can be created if
not exist by -c flag. In this case v.db.reconnect.all
also tries to create an index on key column (usually "cat"
column).
 
NOTES
 
The value of the old_database option needs to be the exact
string which appears as the fourth field printed by
v.db.connect -g. 
v.db.connect -g map=census 
1/census|census|cat|/home/user/grassdata/nc_spm_base/PERMANENT/dbf/|dbf
Attribute tables from old_database are after reconnecting left
untouched. v.db.reconnect.all deletes those tables
automatically only when -d flag is given.
Also note that v.db.reconnect.all doesn't change default
database driver or database (db.connect -p). Default database
connection settings for newly created attribute data can be defined
by db.connect.
EXAMPLES
In the examples below are assumed, that attribute tables are linked to
the vector maps through DBF database
driver.
 
Reconnect DBF attribute tables to SQLite database
Reconnect DBF attribute tables linked to
the vector maps in the current mapset
to SQLite database:
v.db.reconnect.all old_database='$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/' \
 new_driver=sqlite new_database='$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db'
Convert DBF attribute tables to SQLite database
For coping DBF tables to SQLite database and reconnecting them for all
vector maps in the current mapset must be defined also -c flag.
v.db.reconnect.all -c old_database='$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/' \
 new_driver=sqlite new_database='$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db'
# set default connection (sqlite)
db.connect -d
# verify default connection
db.connect -g
# reconnect
v.db.reconnect.all -c old_database='$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/'
Convert GRASS 6 vector map to GRASS 7 including attribute transfer from DBF to SQLite
To become usable in GRASS 7, all vector maps in a mapset need to be updated:
# first rebuild topology for all vector maps
v.build.all
# set new default db connection (to SQLite default)
db.connect -d
# copy attribute tables from old DB to new SQLite DB, delete old tables in DBF format
v.db.reconnect.all -cd
SEE ALSO
  v.db.connect,
  db.connect,
  db.copy,
  db.createdb,
  db.droptable
GRASS SQL interface
AUTHORS
Radim Blazek
Major update by Martin Landa, Czech Technical University in Prague, Czech Republic
 
Last changed: $Date: 2013-02-08 08:20:43 +0100 (Fri, 08 Feb 2013) $