arangosh> var examples = require("org/arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("social");
arangosh> graph.female.save({name: "Lynda", _key: "linda"});
{ 
  "error" : false, 
  "_id" : "female/linda", 
  "_rev" : "811361750", 
  "_key" : "linda" 
}
arangosh> graph.female.update("female/linda", {name: "Linda", _key: "linda"});
{ 
  "error" : false, 
  "_id" : "female/linda", 
  "_rev" : "811558358", 
  "_key" : "linda" 
}