What are collections?
A collection is a series of translations that were published together. They appear in the same venue at the same time. They are considered as a single instance of publication.
If a translator publishes four different poems by a single author in a journal, those four translations are grouped as a collection. A collection of short stories consisting of a seven pieces have been broken down to its constituents. The book itself would make one record in the database, and each story in the book would be recorded as a single record. this means that the book would result in 8 records in the database. All eight records consist one collection.