Node:An Example Session, Next:The DB-Spec, Previous:Predicates, Up:BDB

An Example Session

| ?- db_open('/tmp/db', update, [a(+,-)], '$db_env'(-33470544), DBRef).

DBRef = '$db'(-33470432) ?

yes
| ?- db_store('$db'(-33470432), a(b,1), _).

yes
| ?- db_store('$db'(-33470432), a(c,2), _).

yes
| ?- db_fetch('$db'(-33470432), a(b,X), _).

X = 1 ? ;

no
| ?- db_enumerate('$db'(-33470432), X, _).

X = a(b,1) ? ;

X = a(c,2) ? ;

no
| ?- db_current(DBName, Mode, Spec, EnvRef, DBRef).

Mode = update,
Spec = [a(+,-)],
DBRef = '$db'(-33470432),
DBName = '/tmp/db',
EnvRef = '$db_env'(-33470544) ? ;

no
| ?- db_close_env('$db_env'(-33470544)).

yes