A. “rolling backup”
B. “roll backup”
C. “rolling commit”
D. none of the mentioned
In sharded clusters, delayed members have limited utility when the __________ is enabled.
MongoDB indexes use a _______ data structure.
Select the correct statement :
MongoDB supports the creation of user-defined ascending/descending indexes on a ______ field of a document.
The ______ index is unique and prevents clients from inserting two documents with the same value for the _id field.
Select the wrong statement :
MongoDB also supports user-defined indexes on multiple fields called :
MongoDB uses ______ indexes to index the content stored in arrays.
MongoDB provides a ________ index type that supports searching for string content in a collection.
Indexes are typically available in ______ or located sequentially on disk.