olemus
(1) jäädvustatud hetkeolek, millesse saab vajadusel naasta, näiteks arvutisüsteemis, programmis, andmebaasis
Wiktionary:
2. (computing) a situation, often represented by a point in time, at which the state of a database system is known to be valid, and to which it can be returned in the event of a crisis by using a combination of backups and logs; the data stored at this event
https://en.wikipedia.org/wiki/Application_checkpointing
https://en.wikipedia.org/wiki/Transaction_processing_system#Recovery_process
(2) mehitatud kontrollimiskoht, näiteks piiripunkt, pääsla vm
Wiktionary:
1. a point or place where a check is performed, especially a point along a road or on a frontier where travellers are stopped for inspection
https://en.wikipedia.org/wiki/Border_checkpoint
https://en.wikipedia.org/wiki/Security_checkpoint
https://en.wikipedia.org/wiki/Random_checkpoint
https://en.wikipedia.org/wiki/Weigh_station