Explanation:The _id field may contain values of any BSON data type, other than an array. 7. GridFS uses a _________ index on the chunks collection for the files_id and n fields.
A. unique
B. single
C. non unique
D. None of the mentioned
Answer:A
Explanation:The _id field may contain values of any BSON data type, other than an array. 7. GridFS uses a _________ index on the chunks collection for the files_id and n fields.
A. unique B. single C. non unique D. None of the mentioned
Explanation:The files_id field contains the _id of the chunk’s “parent” document. 8. The ______ field is always the first field in the document.