Explanation:MMAPv1 provides collection-level locking. 3. All collections have a unique ________ lock that allows multiple clients to modify documents in different collections at the same time.
A. writer
B. readers-writer
C. readers
D. All of the mentioned
Answer:A
Explanation:MMAPv1 provides collection-level locking. 3. All collections have a unique ________ lock that allows multiple clients to modify documents in different collections at the same time.
A. writer B. readers-writer C. readers D. All of the mentioned
Explanation:Each database has a readers-writer lock that allows concurrent read access to a database, but gives exclusive access to a single write operation per database. 4. _________ supports concurrent access by readers and writers to the documents in a collection.