Explanation:MongoDB provides a number of different index types to support specific types of data and queries. 2. Point out the correct statement :
A. If an appropriate index exists for a query, MongoDB cannot use the index to limit the number of documents it must inspect
B. Indexes support the efficient execution of queries in MongoDB
C. The index stores the location of a specific field or set of fields, ordered by the value of the field
D. None of the mentioned
Answer:A
Explanation:MongoDB provides a number of different index types to support specific types of data and queries. 2. Point out the correct statement :
A. If an appropriate index exists for a query, MongoDB cannot use the index to limit the number of documents it must inspect B. Indexes support the efficient execution of queries in MongoDB C. The index stores the location of a specific field or set of fields, ordered by the value of the field D. None of the mentioned
Explanation: Without indexes, MongoDB must perform a collection scan. 3. MongoDB supports the creation of user-defined ascending/descending indexes on a ______ field of a document.