arangosh> var examples = require("org/arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("social");
arangosh> graph.relation.save("female/alice", "female/diana", {type: "knows", _key: "aliceAndDiana"});
{
"_id" : "relation/aliceAndDiana",
"_rev" : "1295833543",
"_key" : "aliceAndDiana"
}
arangosh> graph.relation.update("relation/aliceAndDiana", {type: "quarrelled", _key: "aliceAndDiana"});
{
"_id" : "relation/aliceAndDiana",
"_rev" : "1296030151",
"_key" : "aliceAndDiana"
}