The dburl (or dburi) has become common to use by many systems connecting to a database. The feature is that one can pass all parameters in a string, which has similar pattern as http-URI do.
Especially when using psql in a script, having the credentials in one string is convenient.
The syntax could be: [scheme[<+>dsn]]://[[username[:[password]]@][host][:port][/[dbname][/[[table[/[column[,column...]*]]]|sql]]]
