Can a foreign key be NULL and/or duplicate? Can a foreign key be NULL and/or duplicate? oracle oracle
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Can a foreign key be NULL and/or duplicate?
sql
sql-server
oracle
foreign-keys
lien
oracle
How can I find which tables reference a given table in Oracle SQL Developer?
sql
oracle
foreign-keys
oracle-sqldeveloper
lien
oracle
Are foreign keys really necessary in a database design?
database
oracle
foreign-keys
lien
oracle
How to add a new column with foreign key constraint in a single statement in oracle
sql
oracle
foreign-keys
ddl
lien
oracle
Insufficient privileges when adding FK constraint (Oracle)
oracle
foreign-keys
lien
oracle
Oracle (ORA-02270) : no matching unique or primary key for this column-list error
database
oracle
foreign-keys
primary-key
lien
oracle
Does Oracle automatically create a secondary index for FOREIGN KEY columns?
performance
oracle
indexing
foreign-keys
lien
oracle
Foreign key referencing a view in Oracle
sql
oracle
views
foreign-keys
lien
oracle
Changing a FK delete rule in Oracle without dropping and recreating it?
oracle
foreign-keys
lien
oracle
Foreign keys in alternate schemas with Oracle?
oracle
foreign-keys
lien
oracle
Referencing a composite primary key
sql
oracle
foreign-keys
primary-key
composite-primary-key
lien
oracle
Can Foreign Key be null? [duplicate]
sql
oracle
database-design
foreign-keys
data-integrity
lien
oracle
Oracle get foreign keys
sql
oracle
foreign-keys
lien
oracle
Enforce a foreign-key constraint to columns of same table
sql
oracle
foreign-keys
self-reference
insert-into
lien
oracle
Can a foreign key reference another foreign key
sql
oracle
foreign-keys
lien
oracle
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