gs gs112 MongoDB CRUD Concepts and Operation - Generate Test Data - Quiz No.1
gs gs112 MongoDB Quiz
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Question 1: Which of the following will implicitly create the collection testData?
while (var i = 1; i <= 25; i++) { db.testData.insert( { x : i } ) } for (var i = 1; i <= 25; i++) { db.testData.insert( { x : i } ) } for (var i = 1; i <= 25; i++) { db.testData.inserts( { x : i } ) }
None of the mentioned
Question 2: Point out the correct statement.
Collection is a group of MongoDB documents
MongoDB is an open-source document database, and leading NoSQL database
Collections do not enforce a schema
All of the mentioned
Question 3: Which of the following method returns a cursor?
find
sort
skip
all of the mentioned
Question 4: Which of the following function is valid for creation of new data inside MongoDB Shell?
function insertData(dbName, colName, num) { var col = db.getSiblingDB(dbName).getCollection(colName); for (i = 0; i < num; i++) { col.insertData({x:i}); } print(col.count()); } function insertData(dbName, colName, num) { var col = db.getSiblingDB(dbName).getCollection(colName); for (i = 0; i < num; i++) { col.insert({x:i}); } print(col.count()); } insertData(dbName, colName, num) { var col = db.getSiblingDB(dbName).getCollection(colName); for (i = 0; i < num; i++) { col.insert({x:i}); } print(col.count()); }
None of the mentioned
Question 5: Point out the wrong statement.
Database is a physical container for collections
A single MongoDB server typically has single databases
Collection is the equivalent of an RDBMS table
None of the mentioned
Question 7: Which of the following statement will insert 400 documents in to the testData collection?
insertData("test", "testData", 200)
insertData("test", "testData", 400)
insertData("test", "testData", 600)
all of the mentioned
Question 8: The mongo shell loads and parses the ___________ file on startup.
mongo.js
mongoc.js
mongorc.js
all of the mentioned
Question 9: To iterate the cursor and return more documents, type _________ in the mongo shell.
cursor
it
next
none of the mentioned
Question 10: Which of the following key is used to denote uniqueness in the collection?
_id
id
id_
none of the mentioned
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