arangosh> a1 = db.example.insert({ a : 1 }); { "_id" : "example/326782536", "_rev" : "326782536", "_key" : "326782536" } arangosh> a2 = db.example.replace("example/3903044", { a : 2 }); { "_id" : "example/3903044", "_rev" : "326979144", "_key" : "3903044" }