Which one of the following statements about referential integrity is false
it prevent you from deleting a parent record that has a related child record -
it prevent unauthorised persons from editing the database
it ensures that a child record can not be enterd unless it has a parent -
it prevents you from editing the primary key value in the parent table if there is a related record in the child table -
ففى أحد النماذج المحلولة من بعض الأساتذة الأفاضل كان الاختيار الثانى هو الحل
وفى نموذج آخر كان الحل هو الاختيار الأخير
فأيهما الصحيح؟
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