Database
db={"cs":[{"cID":"00001","title":{"en":"title en1","de":"title de1"},"desc":{"en":"desc en1","de":"desc de1"},"startDate":20210801,"endDate":20210809,"numDays":8},{"cID":"00002","title":{"en":"en2","de":"de2"},"desc":{"en":"desc en1","de":"desc de1"},"startDate":20210701,"endDate":20210715,"numDays":14}]}
Query
db.cs.find({"cID":"00002"})