a) FIFO b) LIFO c) LRU d) MRU Answer: a Explanation: Capped collections efficiently support operations that ...
View QuestionThe __________ feature of collections expires documents after a period of time.
a) TEL b) TTL c) TPL d) None of the mentioned Answer: b Explanation: Consider using the ...
View QuestionTo get the current number of namespaces in the mongo shell, use ________________
a) db.system.namespaces.countc() b) db.system.namespaces.count(*) c) db.system.namespaces.count() d) all of the mentioned Answer: c Explanation: The limit on ...
View QuestionMongoDB using the mmapv1 storage engine has limits on the number of __________
a) namespaces b) collections c) documents d) none of the mentioned Answer: a Explanation: The namespace file ...
View QuestionTo interact with embedded documents, use ___________ notation to “reach into” embedded documents.
a) period b) dot c) comma d) colon Answer: b Explanation: References provides more flexibility than ...
View QuestionPoint out the wrong statement.
a) Embedded data models make it possible to update related data in a single atomic write operation b) ...
View QuestionNormalized data models describe relationships using ___________ between documents.
a) relativeness b) references c) evaluation d) none of the mentioned Answer: b Explanation: Normalized data models ...
View QuestionEmbedded data model is used when you have _________ relationships between entities.
a) contains b) isa c) inheritance d) all of the mentioned Answer: a Explanation: Embedding provides better performance for read operations.
View QuestionPoint out the correct statement.
a) With MongoDB, you cannot embed related data in a single structure or document b) The key consideration ...
View Question___________ data models allow applications to store related pieces of information in the same database record.
a) Reference b) Embedded c) External d) None of the mentioned Answer: b Explanation: As a result, ...
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