datomic-shortcut, from https://clojureverse.org/t/a-quick-way-to-start-experimenting-with-datomic/5004

core.clj

(ns datomic-shortcut.core
  (:require [datomic.api :as d]))

(def db-uri "datomic:mem://foo")

(comment
  (d/create-database db-uri)
  (def conn (d/connect db-uri))
  )

(def movie-schema [{:db/ident :movie/title
                    :db/valueType :db.type/string
                    :db/cardinality :db.cardinality/one
                    :db/doc "The title of the movie"}

                   {:db/ident :movie/genre
                    :db/valueType :db.type/string
                    :db/cardinality :db.cardinality/one
                    :db/doc "The genre of the movie"}

                   {:db/ident :movie/release-year
                    :db/valueType :db.type/long
                    :db/cardinality :db.cardinality/one
                    :db/doc "The year the movie was released in theaters"}])

;; @(d/transact conn movie-schema)

(def first-movies [{:movie/title "The Goonies"
                    :movie/genre "action/adventure"
                    :movie/release-year 1985}
                   {:movie/title "Commando"
                    :movie/genre "thriller/action"
                    :movie/release-year 1985}
                   {:movie/title "Repo Man"
                    :movie/genre "punk dystopia"
                    :movie/release-year 1984}])

;; @(d/transact conn first-movies)

(def all-titles-q '[:find ?movie-title
                    :where
                    [_ :movie/title ?movie-title]])


;; (d/q all-titles-q (d/db conn))
;; => #{["Commando"] ["The Goonies"] ["Repo Man"]}

project.clj

(defproject datomic-shortcut "0.1.0-SNAPSHOT"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
            :url "https://www.eclipse.org/legal/epl-2.0/"}
  :dependencies [[org.clojure/clojure "1.10.0"]
                 [com.datomic/datomic-free "0.9.5697"]]
  :main ^:skip-aot datomic-shortcut.core
  :target-path "target/%s"
  :profiles {:uberjar {:aot :all}})