What isRisk attaching basis versus loss occurring basis?

What isRisk attaching basis versus loss occurring basis?
Risks attaching basis
A basis under which reinsurance is provided for claims arising from policies commencing during the period to which the reinsurance relates. The insurer knows there is coverage during the whole policy period even if claims are only discovered or made later on.
All claims from cedant underlying policies incepting during the period of the reinsurance contract are covered even if they occur after the expiration date of the reinsurance contract. Any claims from cedant underlying policies incepting outside the period of the reinsurance contract are not covered even if they occur during the period of the reinsurance contract. Losses occurring basisA Reinsurance treaty under which all claims occurring during the period of the contract, irrespective of when the underlying policies incepted, are covered. Any claims occurring after the contract expiration date are not covered.
As opposed to claims-made or risks attaching contracts. Insurance coverage is provided for losses occurring in the defined period. This is the usual basis of cover for short tail business.