When you create users with database-level properties, those users are available to the specified database only.
You set the property once for each user. To delete a user, set that user's password to null.
When you create users with system-level users, those users are available to all databases in the system.
You set the value of this system-wide property once for each user, so you can set it several times. To delete a user, remove that user from the file.
You can define this property in the usual ways-typically in the derby.properties file.
When a user name and its corresponding password are provided in the DriverManager.getConnection call, Derby validates them against the properties defined for the current system.
User names are SQL92Identifiers and can be delimited.
derby.user.{UserName=Password} | UserName=userDN }
-- database-level property
CALL SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY(
'derby.user.UserName',
'Password | userDN')
None.
-- system-level property
derby.user.guest=java5w
derby.user.sa=Derby3x9 derby.user."!Amber"=java5w -- database-level property CALL SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY( 'derby.user.sa', 'Derby3x9') -- cache a userDN locally, database-level property CALL SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY( 'derby.user.richard', 'uid=richard, ou=People, o=ExampleSite.com')
Dynamic. The change takes effect immediately. For information about dynamic changes to properties, see Dynamic or static changes to properties.