This class contains public statics that map directly to the
new public statics in the jdbc 4.0 interfaces. By providing
an intermediary class with hard-coded copies of constants that
will be available in jdbc 4.0, it becomes possible to refer to
these constants when compiling against older jdk versions.
This class also contains some constants shared by the network server and client.
This class should not be shipped with the product.
This class has no methods, all it contains are constants
are public, static and final since they are declared in an interface.