Is it possible to delete an infoblock by XML_ID?

Question

1C-Bitrix

How to delete or update by foreign key (XML_ID) through the CIBlockElement class?

Answer 1

Get element ID by XML_ID and delete/update by ID.
Done right, this should be a fairly cheap operation.

Answer 2

CIBlockElement - works with infoblock elements, it is impossible to delete the infoblock itself through it.
If you need to delete elements, then CIBlockElement::Delete($ELEMENT_ID) $ELEMENT_ID can be obtained through filtering by the property you need