#include <db.h> 


DB *dbp;           /* DB structure handle */
u_int32_t flags;   /* database open flags */
int ret;           /* function return value */

/* Initialize the structure. This
 * database is not opened in an environment, 
 * so the environment pointer is NULL. */
ret = db_create(&dbp, NULL, 0);
if (ret != 0) {
  /* Error handling goes here */
}

/* Database open flags */
flags = DB_CREATE;    /* If the database does not exist, 
                       * create it.*/

/* open the database */
ret = dbp->open(dbp,        /* DB structure pointer */
                NULL,       /* Transaction pointer */
                "my_db.db", /* On-disk file that holds the database. */
                NULL,       /* Optional logical database name */
                DB_BTREE,   /* Database access method */
                flags,      /* Open flags */
                0);         /* File mode (using defaults) */
if (ret != 0) {
  /* Error handling goes here */
}