--
-- PostgreSQL database dump
--

-- Dumped from database version 16.4 (Debian 16.4-1.pgdg120+1)
-- Dumped by pg_dump version 16.4 (Debian 16.4-1.pgdg120+1)

SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;

ALTER TABLE ONLY public.student DROP CONSTRAINT student_group_id_fkey;
ALTER TABLE ONLY public.presence DROP CONSTRAINT presence_student_id_fkey;
ALTER TABLE ONLY public.student DROP CONSTRAINT student_pkey;
ALTER TABLE ONLY public.presence DROP CONSTRAINT presence_pkey;
ALTER TABLE ONLY public."group" DROP CONSTRAINT group_pkey;
DROP TABLE public.student;
DROP TABLE public.presence;
DROP TABLE public."group";
SET default_tablespace = '';

SET default_table_access_method = heap;

--
-- Name: group; Type: TABLE; Schema: public; Owner: postgres
--

CREATE TABLE public."group" (
    group_id integer NOT NULL,
    group_name text NOT NULL
);


ALTER TABLE public."group" OWNER TO postgres;

--
-- Name: group_group_id_seq; Type: SEQUENCE; Schema: public; Owner: postgres
--

ALTER TABLE public."group" ALTER COLUMN group_id ADD GENERATED ALWAYS AS IDENTITY (
    SEQUENCE NAME public.group_group_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1
);


--
-- Name: presence; Type: TABLE; Schema: public; Owner: postgres
--

CREATE TABLE public.presence (
    student_id integer NOT NULL,
    presence_date date NOT NULL,
    presence_is_attendance boolean DEFAULT true NOT NULL,
    presence_lesson_number smallint NOT NULL
);


ALTER TABLE public.presence OWNER TO postgres;

--
-- Name: student; Type: TABLE; Schema: public; Owner: postgres
--

CREATE TABLE public.student (
    student_id integer NOT NULL,
    student_name text NOT NULL,
    group_id integer
);


ALTER TABLE public.student OWNER TO postgres;

--
-- Name: student_student_id_seq; Type: SEQUENCE; Schema: public; Owner: postgres
--

ALTER TABLE public.student ALTER COLUMN student_id ADD GENERATED ALWAYS AS IDENTITY (
    SEQUENCE NAME public.student_student_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1
);


--
-- Name: group group_pkey; Type: CONSTRAINT; Schema: public; Owner: postgres
--

ALTER TABLE ONLY public."group"
    ADD CONSTRAINT group_pkey PRIMARY KEY (group_id);


--
-- Name: presence presence_pkey; Type: CONSTRAINT; Schema: public; Owner: postgres
--

ALTER TABLE ONLY public.presence
    ADD CONSTRAINT presence_pkey PRIMARY KEY (student_id, presence_date, presence_is_attendance, presence_lesson_number);


--
-- Name: student student_pkey; Type: CONSTRAINT; Schema: public; Owner: postgres
--

ALTER TABLE ONLY public.student
    ADD CONSTRAINT student_pkey PRIMARY KEY (student_id);


--
-- Name: presence presence_student_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: postgres
--

ALTER TABLE ONLY public.presence
    ADD CONSTRAINT presence_student_id_fkey FOREIGN KEY (student_id) REFERENCES public.student(student_id);


--
-- Name: student student_group_id_fkey; Type: FK CONSTRAINT; Schema: public; Owner: postgres
--

ALTER TABLE ONLY public.student
    ADD CONSTRAINT student_group_id_fkey FOREIGN KEY (group_id) REFERENCES public."group"(group_id);


--
-- PostgreSQL database dump complete
--