Explanation: Indexes on embedded fields differ from indexes on embedded documents, which include the full content up to the maximum index size of the embedded document in the index. 3. For a _____ multikey index, each indexed document can have at most one indexed field whose value is an array.
A. Hashed
B. Unique
C. Multikey
D. compound
Answer:A
Explanation: Indexes on embedded fields differ from indexes on embedded documents, which include the full content up to the maximum index size of the embedded document in the index. 3. For a _____ multikey index, each indexed document can have at most one indexed field whose value is an array.
A. Hashed B. Unique C. Multikey D. compound
Explanation:As such, you cannot create a compound multikey index if more than one to-be-indexed field of a document is an array. 4. Which of the following indexes cannot be multikey ?