java.sql.DriverManager.getConnection( ) accepts these URLs:
null
“” (the null string)
jdbc:default:connection
When invoking SQL from Java some restrictions apply:
A SQL query that is performing update actions (update, insert, or delete) cannot use the facilities of java.sql to invoke other SQL operations that also perform update actions.
Triggers that are fired by SQL using the facilities of java.sql cannot generate result sets.
java.sql cannot be used to execute extended stored procedures or remote stored procedures.
