15. Consider the following transaction graphe crash A Which transaction(s) must be redone? D A C B 16. When is a referen
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15. Consider the following transaction graphe crash A Which transaction(s) must be redone? D A C B 16. When is a referen
15. Consider the following transaction graphe crash A Which transaction(s) must be redone? D A C B 16. When is a referential integrity constraint violated? O Occurs when a delete on a foreign key table is performed without a matching value in the primary key table. Occurs when an insert or update on a table with a foreign key is performed without a matching value in the foreign key's primary table. Occurs when an insert or update on a primary key table is performed without a matching value in the foreign key table. Occurs when a delete on a primary key table is performed without a matching value in the foreign key table. 00 DUDE С B
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