Relationale Datenbanken (BD 2015)
Aus Philo Wiki
C.J. Date: Introduction to Database Systems (Edition 6). 1094
Beispieldatenbank t50
CREATE TABLE `personen` ( `pers_id` smallint(6) NOT NULL, `vornamen` char(15) COLLATE utf8_unicode_ci NOT NULL, `nachname` char(25) COLLATE utf8_unicode_ci NOT NULL, `plz` char(10) COLLATE utf8_unicode_ci DEFAULT NULL, `ort` char(30) COLLATE utf8_unicode_ci DEFAULT NULL, `strasze` char(35) COLLATE utf8_unicode_ci DEFAULT NULL, `nummer` smallint(6) NOT NULL, `telefon` int(11) NOT NULL, `email` char(60) COLLATE utf8_unicode_ci NOT NULL, `homepage` char(100) COLLATE utf8_unicode_ci NOT NULL, PRIMARY KEY (`pers_id`); CREATE TABLE `objekte` ( `objekt_id` char(10) COLLATE utf8_unicode_ci NOT NULL, `titel` char(30) COLLATE utf8_unicode_ci NOT NULL, `technik` char(35) COLLATE utf8_unicode_ci NOT NULL, `format` char(30) COLLATE utf8_unicode_ci DEFAULT NULL, `jahr` smallint(6) NOT NULL, `notiz` char(25) COLLATE utf8_unicode_ci NOT NULL, `auflage` smallint(6) NOT NULL, PRIMARY KEY (`objekt_id`); CREATE TABLE `artists` ( `pers_id` smallint(6) NOT NULL, `objekt_id` char(10) COLLATE utf8_unicode_ci NOT NULL, PRIMARY KEY (`pers_id`,`objekt_id`), KEY `objekt_id` (`objekt_id`), KEY `pers_id` (`pers_id`); insert into objekte values ('1', 'Traumata','Zeichnung','30cm x 50cm','2014','','1'); insert into artists values ('4','2'); SELECT * FROM personen p, artists a WHERE p.pers_id = a.pers_id; SELECT p.vornamen, p.nachname FROM personen p, artists a WHERE p.pers_id = a.pers_id