arangosh> db.names.ensureIndex({ type: "skiplist", fields: [ "first" ] }); { "id" : "names/16027", "type" : "skiplist", "fields" : [ "first" ], "unique" : false, "sparse" : false, "isNewlyCreated" : true, "code" : 201 } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/16030", "_key" : "16030", "_rev" : "16030" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/16034", "_key" : "16034", "_rev" : "16034" } arangosh> db.names.save({ "first" : "John" }); { "_id" : "names/16037", "_key" : "16037", "_rev" : "16037" } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/16040", "_key" : "16040", "_rev" : "16040" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/16043", "_key" : "16043", "_rev" : "16043" }