DROP TABLE students, events;

CREATE TABLE IF NOT EXISTS students
(
    id           int GENERATED ALWAYS AS IDENTITY,
    snowflake    text NOT NULL,
    ade_resource int  NOT NULL,
    PRIMARY KEY (id),
    UNIQUE (snowflake)
);

CREATE TABLE IF NOT EXISTS events
(
    id          int GENERATED ALWAYS AS IDENTITY,
    students_id int         NOT NULL,
    summary     text        NOT NULL,
    start_event timestamptz NOT NULL,
    end_event   timestamptz NOT NULL,
    PRIMARY KEY (id),
    FOREIGN KEY (students_id)
        REFERENCES students (id)
        ON DELETE CASCADE
);