Deleting rows in a table T1, when last row in table T2 is deleted

I have two tables, T1 and T2. The relation of T1 to T2 is one to many.
If the last row of T2 is deleted, the correspondig record in T1 should also be deleted.
How can I implement this in the delete-trigger of T2.
Thanks
null

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Deleting rows in a table T1, when last row in table T2 is deleted

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