gs gs112 Data Models - Data Modeling Concepts - Quiz No.1
gs gs112 MongoDB Quiz
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Question 1: ___________ data models allow applications to store related pieces of information in the same database record.
Reference
Embedded
External
None of the mentioned
Question 2: Point out the correct statement.
With MongoDB, you cannot embed related data in a single structure or document
The key consideration for the structure of your documents is the decision to embed or to use references
Reference schema is generally known as “denormalized” models
None of the mentioned
Question 3: Embedded data model is used when you have _________ relationships between entities.
contains
isa
inheritance
all of the mentioned
Question 4: Normalized data models describe relationships using ___________ between documents.
relativeness
references
evaluation
none of the mentioned
Question 5: Point out the wrong statement.
Embedded data models make it possible to update related data in a single atomic write operation
Embedding related data in documents may lead to situations where documents grow after creation
With the MMAPv1 storage engine, document growth can impact write performance and lead to data fragmentation
All of the mentioned
Question 7: MongoDB using the mmapv1 storage engine has limits on the number of __________
namespaces
collections
documents
none of the mentioned
Question 8: To get the current number of namespaces in the mongo shell, use ________________
db.system.namespaces.countc()
db.system.namespaces.count(*)
db.system.namespaces.count()
all of the mentioned
Question 9: The __________ feature of collections expires documents after a period of time.
TEL
TTL
TPL
None of the mentioned
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