arangosh> db.names.ensureIndex({ type: "skiplist", fields: [ "first" ] }); { "id" : "names/15894", "type" : "skiplist", "fields" : [ "first" ], "unique" : false, "sparse" : false, "isNewlyCreated" : true, "code" : 201 } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15897", "_key" : "15897", "_rev" : "15897" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15901", "_key" : "15901", "_rev" : "15901" } arangosh> db.names.save({ "first" : "John" }); { "_id" : "names/15904", "_key" : "15904", "_rev" : "15904" } arangosh> db.names.save({ "first" : "Tim" }); { "_id" : "names/15907", "_key" : "15907", "_rev" : "15907" } arangosh> db.names.save({ "first" : "Tom" }); { "_id" : "names/15910", "_key" : "15910", "_rev" : "15910" }