;; create schema
#{ {:db/ident       :person/id
   :db/valueType   :db.type/uuid
   :db/cardinality :db.cardinality/one
   :db/unique      :db.unique/value}
  {:db/ident       :person/name
   :db/valueType   :db.type/string
   :db/cardinality :db.cardinality/one}
  {:db/ident       :person/manager
   :db/valueType   :db.type/ref
   :db/cardinality :db.cardinality/one}}

;; insert data
#{ {:person/id      #uuid "d3f29960-ccf0-44e4-be66-1a1544677441"
   :person/name    "Foo"
   :person/manager [:person/id #uuid "076356f4-1a0e-451c-b9c6-a6f56feec941"]}
  {:person/id      #uuid "076356f4-1a0e-451c-b9c6-a6f56feec941"
   :person/name    "Bar"}}

;; query data, make a relation
{:find [?employee-name ?manager-name]
 :where [[?person  :person/name    ?employee-name]
         [?person  :person/manager ?manager]
         [?manager :person/name    ?manager-name]]}