Serialization of an object graph includes class information as
        well as instance information. If more than one instance of the same
        class is serialized as separate serialization operations then the
        class information exists more than once. To eliminate this
        inefficiency the 
        StoredClassCatalog
        
        class will store the class format for all database records stored
        using a 
        SerialBinding.
        Refer to the
        ship sample code for examples (the class
        SampleDatabase in
        examples_java/src/com/sleepycat/examples/collections/ship/basic/SampleDatabase.java
        
        is a good place to start).