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Relation: subclass

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DigitalDataStorageDevice25An instance of DigitalDataStorageDevice is an ElectronicDataStorageDevice intended to be used...^
    WriteOnceDataStorage1A DigitalDataStorageDevice on which the DigitalData once written can not be deleted or altered,...^
        CDR.A type of CompactDisc that can be written on once and read from multiple times.^

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