ere Berkeley DB is installed.
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        <p>
Apart from the above three header files, you may also need to include db_exception.h and db_utility.h files. The db_exception.h file contains all exception classes of dbstl, which
integrate seamlessly with Berkeley DB C++ API exceptions and C++ standard exception classes in std namespace. And the db_utility.h file contains the DbstlElemTraits which helps you
to store complex objects. These five header files are all that you need to include in order to make use 