arangosh> db.names.ensureIndex({ type: "skiplist", fields: [ "first" ] }); { "id" : "names/15864", "type" : "skiplist", "fields" : [ "first" ], "unique" : false, "sparse" : false, "isNewlyCreated" : true, "code" : 201 } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15867", "_key" : "15867", "_rev" : "15867" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15871", "_key" : "15871", "_rev" : "15871" } arangosh> db.names.save({ "first" : "John" }); { "_id" : "names/15874", "_key" : "15874", "_rev" : "15874" } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15877", "_key" : "15877", "_rev" : "15877" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15880", "_key" : "15880", "_rev" : "15880" }