1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
CREATE TABLE IF NOT EXISTS polls (
id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
title TEXT NOT NULL,
description TEXT,
pub_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
author_name TEXT NOT NULL,
author_email TEXT,
manage_code uuid DEFAULT uuid_generate_v4()
);
CREATE TABLE IF NOT EXISTS choices (
id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
poll_id uuid NOT NULL,
start_datetime TIMESTAMP NOT NULL,
end_datetime TIMESTAMP NOT NULL,
FOREIGN KEY (poll_id) REFERENCES polls (id) ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS votes (
id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
poll_id uuid NOT NULL,
choice_id uuid NOT NULL,
voter_name TEXT NOT NULL,
FOREIGN KEY (choice_id) REFERENCES choices (id) ON DELETE CASCADE,
FOREIGN KEY (poll_id) REFERENCES polls (id) ON DELETE CASCADE
);
|
