gs gs112 Data Models - Data Model Examples and Patterns - Quiz No.1
gs gs112 MongoDB Quiz
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Question 1: Which of the following relationship uses references to describe documents between connected data?
One-to-One Relationships with Embedded Documents
One-to-Many Relationships with Embedded Documents
One-to-Many Relationships with Document References
None of the mentioned
Question 2: Point out the correct statement.
One-to-One Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data
One-to-One Relationships with document references presents a data model that uses embedded documents to describe one-to-one relationships between connected data
One-to-Many Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data
All of the mentioned
Question 3: If the address data is frequently retrieved with the name information, how will you modify the following schema representing one to one relationship with referencing?
{ _id: "joe", name: "Joe Bookreader" } { patron_id: "joe", street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" } { _id: "joe", name: "Joe Bookreader", address: { street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" } } { _id: "joe", name: "Joe Bookreader", address-> { street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" } } { _id: "joe", name: "Joe Bookreader", address:: { street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" } }
All of the mentioned
Question 4: Which of the following is used to avoid the repetition of data in MongoDB schema?
DeReferences
References
Cursor
Collectors
Question 5: Point out the wrong statement.
Decisions that affect how you model data can affect application performance and database capacity
Collections do enforce document structure
Data in MongoDB has a flexible schema
None of the mentioned
Question 6: What would be the more optimal schema to embed the address data entities in the patron data for following schema representing one to many relationships?
{ _id: "joe", name: "Joe Bookreader" } { patron_id: "joe", street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" } { patron_id: "joe", street: "1 Some Other Street", city: "Boston", state: "MA", zip: "12345" } { _id: "joe", name: "Joe Bookreader", addresses: [ { street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" }, { street: "1 Some Other Street", city: "Boston", state: "MA", zip: "12345" } ] } ?{ _id: "joe", name: "Joe Bookreader", addresses: [ { street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" }, [ street: "1 Some Other Street", city: "Boston", state: "MA", zip: "12345" ] ] } ?{ _id: "joe", name: "Joe Bookreader", addresses: [ [ street: "123 Fake Street", city: "Faketon", state: "MA", zip: "12345" ], { street: "1 Some Other Street", city: "Boston", state: "MA", zip: "12345" } ] } ?
None of the mentioned
Question 7: How will avoid mutable, growing arrays in the following schema?
{ name: "O'Reilly Media", founded: 1980, location: "CA", books: [12346789, 234567890, ...] } { _id: 123456789, title: "MongoDB: The Definitive Guide", author: [ "Kristina Chodorow", "Mike Dirolf" ], published_date: ISODate("2010-09-24"), pages: 216, language: "English" } { _id: 234567890, title: "50 Tips and Tricks for MongoDB Developer", author: "Kristina Chodorow", published_date: ISODate("2011-05-06"), pages: 68, language: "English" } { _id: "oreilly", name: "O'Reilly Media", founded: 1980, location: "CA" } [ _id: 123456789, title: "MongoDB: The Definitive Guide", author: [ "Kristina Chodorow", "Mike Dirolf" ], published_date: ISODate("2010-09-24"), pages: 216, language: "English", publisher_id: "oreilly" ] { _id: 234567890, title: "50 Tips and Tricks for MongoDB Developer", author: "Kristina Chodorow", published_date: ISODate("2011-05-06"), pages: 68, language: "English", publisher_id: "oreilly" }{ _id: "oreilly", name: "O'Reilly Media", founded: 1980, location: "CA" } [ _id: 123456789, title: "MongoDB: The Definitive Guide", author: [ "Kristina Chodorow", "Mike Dirolf" ], published_date: ISODate("2010-09-24"), pages: 216, language: "English", publisher_id: "oreilly" ] [ _id: 234567890, title: "50 Tips and Tricks for MongoDB Developer", author: "Kristina Chodorow", published_date: ISODate("2011-05-06"), pages: 68, language: "English", publisher_id: "oreilly" ]{ _id: "oreilly", name: "O'Reilly Media", founded: 1980, location: "CA" } { _id: 123456789, title: "MongoDB: The Definitive Guide", author: [ "Kristina Chodorow", "Mike Dirolf" ], published_date: ISODate("2010-09-24"), pages: 216, language: "English", publisher_id: "oreilly" } { _id: 234567890, title: "50 Tips and Tricks for MongoDB Developer", author: "Kristina Chodorow", published_date: ISODate("2011-05-06"), pages: 68, language: "English", publisher_id: "oreilly" }
None of the mentioned
Question 8: __________ define what records to select for read, update, and delete operations.
Query optimizer
Query selector
Update definitions
All of the mentioned
Question 9: The ___________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.
mongod
mongo
json
none of the mentioned
Question 10: Which of the following statement is incorrect about documents in MongoDB?
The field names cannot start with the dollar sign ($) character
The field names cannot contain the dot (.) character
The field names cannot contain the null character
None of the mentioned
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