arangosh> a1 = db.example.insert({ a : 1 });
{
"_id" : "example/314199624",
"_rev" : "314199624",
"_key" : "314199624"
}
arangosh> a2 = db.example.replace(a1, { a : 2 });
{
"_id" : "example/314199624",
"_rev" : "314396232",
"_key" : "314199624"
}
arangosh> db.example.remove(a1);
[ArangoError 1200: precondition failed]
arangosh> db.example.remove(a1, true);
true
arangosh> db.example.document(a1);
[ArangoError 1202: document not found]