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.
A. Hashed
B. Unique
C. sparse
D. compound
Answer:A
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.
A. Hashed B. Unique C. sparse D. compound