Explanation:To ensure selectivity, write queries that limit the number of possible documents with the indexed field. Write queries that are appropriately selective relative to your indexed data. 3. _________ defines a circle for a geospatial query that uses spherical geometry.
A. $center
B. $centre
C. $radii
D. $centersphere
Answer:A
Explanation:To ensure selectivity, write queries that limit the number of possible documents with the indexed field. Write queries that are appropriately selective relative to your indexed data. 3. _________ defines a circle for a geospatial query that uses spherical geometry.
A. $center B. $centre C. $radii D. $centersphere