How can referential integrity be violated? Select all that apply.

A primary key is inserted.

A row containing a primary key is deleted.

A foreign key is updated.

A row containing a foreign key is deleted.

A primary key is updated.

A row containing a foreign key is inserted.Expand the logarithm as much as possible. Rewrite the expression as a sum, difference, or product of

logs$.$

$ln(\frac{1}{4^k})$

Enclose arguments of functions in parentheses and include a multiplication sign between terms. For

example, $c**ln(h).$

$ln(\frac{1}{4^k})=$