Explanation:In the case of a single document with repeating values, the repeated value is inserted into the index only once. 6. On replica sets, the TTL background thread only deletes documents on :
A. primary
B. secondary
C. upadte
D. None of the mentioned
Answer:A
Explanation:In the case of a single document with repeating values, the repeated value is inserted into the index only once. 6. On replica sets, the TTL background thread only deletes documents on :
A. primary B. secondary C. upadte D. None of the mentioned
Explanation: Secondary members replicate deletion operations from the primary. 7. You can combine the ________ constraint with the sparse index to filter these null values from the unique index and avoid the error.