cvm-mysql(8) [debian man page]

cvm-mysql(8)						      System Manager's Manual						      cvm-mysql(8)

NAME

       cvm-mysql - MySQL module

SYNOPSIS

       cvm-mysql

CREDENTIALS

       Pass phrase

DESCRIPTION

       This module queries a MySQL database for the account name, compares the stored pass phrase with the given one using crypt(3).

CONFIGURATION VARIABLES

       CVM_MYSQL_DEFAULT_FILE
	      The  full  path of the defaults file to read if the following variable is set.  If not set, the file $HOME/.my.cnf will be read (the
	      MySQL default).

       CVM_MYSQL_DEFAULT_GROUP
	      If set, the module will read connection default options from the named group in the defaults file as above

       CVM_MYSQL_HOST
	      The hostname or IP of the MySQL server.  If not set, a connection to the local host is assumed.

       CVM_MYSQL_USER
	      The MySQL login ID to connect as.  If not set, the invoking user is assumed.

       CVM_MYSQL_PASS
	      The password for the above user.

       CVM_MYSQL_DB
	      The database name, must be set.

       CVM_MYSQL_PORT
	      The port number for the TCP/IP connection (only used if the server is not local).

       CVM_MYSQL_POSTQ (optional)
	      The SQL query to execute after the credentials have been validated, see cvm-sql(7).

       CVM_MYSQL_PWCMP (optional)
	      The password comparison module to use.

       CVM_MYSQL_SOCKET
	      The path to the socket that should be used for connections to a local server.

       CVM_MYSQL_QUERY (optional)
	      The SQL query to issue to retrieve the row containing the account information from the database, see cvm-sql(7).

SEE ALSO

       cvm-sql(7), cvm-pgsql(8), cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-vmailmgr(8),  cvm-benchclient(8),  cvm-checkpassword(8),  cvm-test-
       client(8)

	http://untroubled.org/pwcmp/pwcmp.html
	http://untroubled.org/cvm/cvm.html

																      cvm-mysql(8)

grass-mysql(1grass)						Grass User's Manual					       grass-mysql(1grass)

NAME

       grass-mysql - MySQL driver

       MySQL driver MySQL driver in GRASS MySQL database driver in GRASS enables GRASS to store vector attributes in MySQL server.

       Because	vector attribute tables are created automaticaly when a new vector is written and the name of the table is the same as the name of
       the vector it is good practice to create a new database for each GRASS mapset.

Creating a MySQL database
       A new database is created within MySQL:
       mysql> CREATE DATABASE mydb;
	See the MySQL manual for details.

Driver and database name
       GRASS modules require 2 parameters to connect to a database.  Those parameters are 'driver' and 'database'. For MySQL driver the  parameter
       'driver' should be set to value 'mysql'.  The parameter 'database' can be given in two formats:

		      Database name - in case of connection from localhost

		      String of comma separated list of kye=value options.  Supported options are:

			     dbname - database name

			     host - host name or IP address

			     port - server port number
       Examples of connection parameters:
	 db.connect driver=mysql database=mytest
	 db.connect driver=mysql database='dbname=mytest,host=test.grass.org'

Data types
       GRASS supports almost all MySQL data types with following limitations:

		      Binary columns (BINARY, VARBINARY, TINYBLOB, MEDIUMBLOB, BLOB, LONGBLOB) are not not supported.  If a table with binary col-
		     umn(s) is used in GRASS a warning is printed and only the supported columns are returned in query results.

		      Columns of type SET and ENUM are represented as string (VARCHAR).

		      Very large integers in columns of type BIGINT can be lost or corrupted because GRASS does not support 64	bin  integeres	on
		     most platforms.

		      GRASS does not currently distinguish types TIMESTAMP and DATETIME. Both types are in GRASS interpreted as TIMESTAMP.

Indexes
       GRASS  modules  automaticaly create index on key column of vector attributes table. The index on key column is important for performance of
       modules which update the attribute table, for example v.to.db, v.distance and v.what.rast.

Privileges
       Because MySQL does not support groups of users and because only MySQL 'root' can grant privileges to other users GRASS cannot  automaticaly
       grant select privileges on created tables to group of users.

       If  you want to give privilege to read data from your mapset to other users you have to ask your MySQL server administrator to grant select
       privilege to them on the MySQL database used for that mapset. For example, to allow  everybody to read data in from your database 'mydb':

       shell> mysql --user=root mysql
       mysql> GRANT SELECT ON mydb.* TO ''@'%';

Schemas
       Because MySQL does not support database schemas the parameter 'schema' of module db.connect should never be set to any value.  If  you  set
       that parameter for MySQL driver GRASS will try to write tables to the specified schema which will result in errors.

Groups
       MySQL does not support user groups. Any settings specified by 'group' parameter of module db.connect are ignored by GRASS for MySQL driver.

SEE ALSO

	db.connect, SQL support in GRASS GIS

Credits
       Development of the driver was sponsored by Faunalia (Italy) as part of a project for ATAC.

AUTHOR

       Radim Blazek

       Last changed: $Date: 2011-02-07 18:59:50 +0100 (Mon, 07 Feb 2011) $
       Help Index

GRASS 6.4.2														       grass-mysql(1grass)