1+{
2    connect_info => +{
3	DB_W => +{
4	    attrs => +{
5		AutoCommit => 0,
6		PrintError => 0,
7		RaiseError => 1,
8		Warn => 0,
9	    },
10	    dsn => 'dbi:mysql:dbname=user;host=db_w',
11	    password => undef,
12	    user => 'hoge',
13	},
14    },
15};
16