__________ query calculates distances using flat (planar) geometry.
A. $center
B. $centre
C. $radii
D. Sort
Answer:A
__________ query calculates distances using flat (planar) geometry.
A. $center B. $centre C. $radii D. Sort
Explanation:In MongoDB, sort operations can obtain the sort order by retrieving documents based on the ordering in an index. 2. Point out the wrong statement :