Was bedeutet der folgende Ausdruck:
ON DELETE CASCADE / ON UPDATE CASCADE
ON DELETE CASCADE / ON UPDATE CASCADE
Wenn in der Master-Tabelle ein Wert gelöscht/verändert wird, werden die Referenzen in der Detail-Tabelle mitgelöscht/mitverändert
Tags: Datenbank, detail-tabelle, master-tabelle, ON DELETE CASCADE, ON UPDATE CASCADE, sql
Source:
Source:
![](https://cobocards.s3.amazonaws.com/user/40_40/8/8362106.jpg)
Flashcard set info:
Author: Stejan
Main topic: Informatik
Topic: SQL
School / Univ.: ZbW
City: St. Gallen
Published: 04.03.2011
Tags: sql database datenbank
Card tags:
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ALL (1)
AUTO_INCREMENT (1)
bedingung (1)
befehl (1)
case sensitive (1)
CHAR (1)
column (1)
Constraint (1)
constraints (1)
create (3)
CREATE (2)
data dictionary (2)
database (1)
datenbank (2)
Datenbank (24)
datenbasis (2)
datentyp (1)
dbms (1)
dbs (1)
ddl (3)
definition (2)
DELETE (1)
DESC (1)
detail-tabelle (2)
DISTINCT (1)
dml (2)
dql (2)
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FROM (1)
INSERT (2)
join (1)
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master-tabelle (2)
mysql (1)
NULL (1)
ON UPDATE CASCADE (1)
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referenz (1)
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SELECT (3)
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sql (18)
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