#include <db_cxx.h>

class DbSequence { 
public: 
        DbSequence(Db *db, u_int32_t flags);
        ~DbSequence();

        DB_SEQUENCE *DbSequence::get_DB(); 
        const DB *DbSequence::get_const_DB() const; 
        static DbSequence *DbSequence::get_DbSequence(DB *db); 
        static const DbSequence 
            *DbSequence::get_const_DbSequence(const DB *db);
        ... 
}; 

The DbSequence handle is the handle used to manipulate a sequence object. A sequence object is stored in a record in a database.

DbSequence handles are free-threaded if the DB_THREAD flag is specified to the DbSequence::open() method when the sequence is opened. Once the DbSequence::close() or DbSequence::remove() methods are called, the handle can not be accessed again, regardless of the method's return.

Each handle opened on a sequence may maintain a separate cache of values which are returned to the application using the DbSequence::get() method either singly or in groups depending on its delta parameter.

Calling the DbSequence::close() or DbSequence::remove() methods discards this handle.