db.connect(1grass) GRASS GIS User's Manual db.connect(1grass)
NAME
db.connect - Prints/sets general DB connection for current mapset.
KEYWORDS
database, attribute table, connection settings
SYNOPSIS
db.connect
db.connect --help
db.connect [-pgcd] [driver=name] [database=name] [schema=name]
[group=string] [--help] [--verbose] [--quiet] [--ui]
Flags:
-p
Print current connection parameters and exit
Substitute variables in database settings
-g
Print current connection parameters using shell style and exit
-c
Check connection parameters, set if uninitialized, and exit
-d
Set from default settings and exit
Overwrite current settings if already initialized
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
driver=name
Name of database driver
Options: dbf, mysql, odbc, ogr, pg, sqlite
Default: sqlite
database=name
Name of database
Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db
schema=name
Database schema
Do not use this option if schemas are not supported by driver/data-
base server
group=string
Default group of database users to which select privilege is
granted
DESCRIPTION
db.connect allows the user to set database connection parameters.
These parameters are then taken as default values by modules so that
the user does not need to enter the parameters each time.
The default database backend in GRASS GIS 7 is SQLite.
NOTES
Values are stored in the mapset’s VAR file; the connection is not
tested for validity.
The -p flag will display the current connection parameters.
The -c flag will silently check if the connection parameters have been
set, and if not will set them to use GRASS’s default values. (useful
in scripts before you attempt to create a new database table)
To connect a vector map to a database table, use v.db.connect or
v.db.addtable.
EXAMPLES
SQLite (default backend)
Local storage:
db.connect -d
db.connect -p
db.tables -p
The SQLite database file is created automatically when used the first
time.
See SQLite database driver for details.
PostgreSQL (local connection)
Local storage, database tables stored in database "mydb" (may require
the use of db.login):
db.connect driver=pg database=mydb
db.login user=myname pass=secret
db.connect -p
db.tables -p
See PostgreSQL database driver for details.
PostgreSQL (network connection)
Network storage, database tables stored in database "mydb" (may require
the use of db.login):
db.connect driver=pg database=mydb
db.login user=myname pass=secret host=myserver.com port=6666
db.connect -p
db.tables -p
See PostgreSQL database driver for details.
MySQL (local connection)
Local storage, database tables stored in database "mydb" (may require
the use of db.login):
db.connect driver=mysql database=mydb
db.login user=myname pass=secret
db.connect -p
db.tables -p
See MySQL database driver for details.
MySQL (network connection)
Network storage, database tables stored in database "mydb" (may require
the use of db.login):
db.connect driver=mysql database=mydb
db.login user=myname pass=secret host=myserver.com
db.connect -p
db.tables -p
See MySQL database driver for details.
ODBC
Network storage, database tables stored in database "mydb" (may require
the use of db.login):
db.connect driver=odbc database=mydb
db.login user=myname pass=secret
db.connect -p
db.tables -p
See ODBC database driver for details.
DBF (local, not recommended)
Local storage (the dbf/ subdirectory in the mapset must exist or must
be created by the user):
db.connect driver=dbf database=’$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/’
db.tables -p
See DBF database driver for details.
SEE ALSO
db.columns, db.copy, db.drivers, db.login, db.tables, v.db.addtable,
v.db.connect
GRASS SQL interface
AUTHORS
Main author: Radim Blazek, ITC-Irst, Trento, Italy
GRASS 7 improvements: Martin Landa, Markus Metz
SOURCE CODE
Available at: db.connect source code (history)
Accessed: unknown
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GRASS 7.8.7 db.connect(1grass)
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