153 lines
3.8 KiB
PL/PgSQL
153 lines
3.8 KiB
PL/PgSQL
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DROP VIEW studenten_veranstalter;
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DROP TABLE Veranstalter_Veranstaltung_Uhrzeit;
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DROP TABLE Studenten;
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DROP TABLE Veranstalter;
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DROP TABLE Uhrzeit;
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DROP TABLE veranstaltung;
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DROP SEQUENCE global_id_seq;
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CREATE SEQUENCE global_id_seq;
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CREATE TABLE Studenten (
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matrikelnummer INTEGER PRIMARY KEY DEFAULT nextval('global_id_seq'),
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name VARCHAR(30) NOT NULL,
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email VARCHAR(30) NOT NULL,
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passwort VARCHAR(30) NOT NULL
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);
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CREATE OR REPLACE FUNCTION random_between_two()
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RETURNS VARCHAR AS $$
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BEGIN
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IF random() < 0.5 THEN
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RETURN 'A';
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ELSE
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RETURN 'B';
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END IF;
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END;
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$$ LANGUAGE plpgsql;
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CREATE TABLE Veranstalter (
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ID INTEGER PRIMARY KEY DEFAULT nextval('global_id_seq'),
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name VARCHAR(30),
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email VARCHAR(30),
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passwort VARCHAR(30),
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arbeitszeit INTEGER DEFAULT 0,
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standort VARCHAR(30) DEFAULT random_between_two(),
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krank BOOLEAN DEFAULT FALSE,
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admin BOOLEAN NOT NULL DEFAULT FALSE
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);
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CREATE VIEW studenten_veranstalter AS
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SELECT matrikelnummer AS id, passwort, NULL AS admin FROM Studenten
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UNION ALL
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SELECT ID, passwort, admin FROM Veranstalter;
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CREATE TABLE Veranstaltung (
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ID SERIAL PRIMARY KEY,
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ort VARCHAR(30) NOT NULL,
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raum INTEGER NOT NULL,
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name VARCHAR(90) NOT NULL,
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dauer INTEGER NOT NULL
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);
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CREATE TABLE Uhrzeit (
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ID SERIAL PRIMARY KEY,
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anfangszeit TIME NOT NULL,
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endzeit TIME NOT NULL );
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INSERT INTO Uhrzeit (anfangszeit, endzeit) VALUES
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('08:00:00', '10:00:00'),
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('10:00:00', '12:00:00'),
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('12:00:00', '14:00:00'),
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('14:00:00', '16:00:00'),
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('16:00:00', '18:00:00');
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CREATE TABLE Veranstalter_Veranstaltung_Uhrzeit (
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uhrzeit_ID INTEGER REFERENCES Uhrzeit(ID),
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tag INTEGER NOT NULL,
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veranstalter_ID INTEGER REFERENCES Veranstalter(ID),
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veranstaltung_ID INTEGER REFERENCES Veranstaltung(ID),
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PRIMARY KEY(uhrzeit_ID, tag)
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);
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INSERT INTO Veranstalter (name, email, passwort, admin) VALUES
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('tech_guru', 'admin@example.com', 'password123', TRUE),
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('code_master', 'user1@example.com', 'password1', FALSE),
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('binary_hero', 'user2@example.com', 'password2', FALSE),
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('debug_ninja', 'user3@example.com', 'password3', FALSE),
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('data_wizard', 'user4@example.com', 'password4', FALSE),
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('script_samurai', 'user5@example.com', 'password5', FALSE),
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('dev_genius', 'user6@example.com', 'password6', FALSE),
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('cyber_maven', 'user7@example.com', 'password7', FALSE),
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('net_knight', 'user8@example.com', 'password8', FALSE),
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('bit_boss', 'user9@example.com', 'password9', FALSE),
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('sys_sensei', 'user10@example.com', 'password10', FALSE),
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('crypto_champ', 'user11@example.com', 'password11', FALSE);
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INSERT INTO Veranstaltung (ort, raum, name, dauer) VALUES
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('A', '101', 'Grundlagen der Programmierung', 2),
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('B', '202', 'Algorithmen und Datenstrukturen', 4),
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('A', '103', 'Netzwerkgrundlagen', 2),
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('B', '204', 'Betriebssystemkonzepte', 4),
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('A', '105', 'Softwareentwicklung', 2),
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('B', '206', 'Intelligente Systeme', 4),
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('A', '107', 'Datenbanksysteme', 2),
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('B', '208', 'Webtechnologien', 2),
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('A', '109', 'Computergrafikgrundlagen', 2),
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('B', '210', 'Maschinelles Lernen', 2);
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INSERT INTO Veranstalter_Veranstaltung_Uhrzeit (uhrzeit_ID, tag, veranstaltung_ID) VALUES
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(1, 1, 1),
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(2, 1, 7),
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(3, 1, 8),
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(4, 1, 3),
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(5, 1, 10),
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(1, 2, 4),
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(2, 2, 4),
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(3, 2, 5),
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(4, 2, 6),
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(5, 2, 6),
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(1, 3, 7),
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(2, 3, 8),
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(3, 3, 9),
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(4, 3, 10),
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(5, 3, 1),
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(1, 4, 2),
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(2, 4, 2),
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(3, 4, 3),
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(4, 4, 4),
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(5, 4, 4),
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(1, 5, 5),
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(2, 5, 6),
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(3, 5, 6),
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(4, 5, 7),
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(5, 5, 8);
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