Can Foreign Key be null? [duplicate] Can Foreign Key be null? [duplicate] oracle oracle
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Can Foreign Key be null? [duplicate]
sql
oracle
database-design
foreign-keys
data-integrity
lien
oracle
column not null deferrable
oracle
data-integrity
lien
oracle
How to prevent column b containing the same value as any column a in Oracle?
oracle
data-integrity
lien
oracle
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