Given the following mongoDB documents for the Contacts collection, complete the next 3 questions [ { “_id”:1, “Contact”:{“fname”:“John”, “lname”:“Doe”, “Phone”:“9055551212”}, “balance”:1000}, { “_id”:2, “Contact”:{“fname”:“Jane”, “lname”:“Smith”, “email”:“jsmith@dom.com”}, “balance”:786.45}, { “_id”:3,“Contact”:{“fname”:“Raj”, “lname”:“Patel”, “email”:“rpatel@ema.com”}} ] Write the OUTPUT for the third statement (MongoDB Shell) below assuming the first 2 have already been executed successfully: > db.Contacts.update( {“_id”:2},{“$inc”: {“balance” : 12.45}}) > db.Contacts.update( {“_id”:1},{“$inc”: {“balance” : 19.99}}) > db.Contacts.find({“_id” : {“$lte” : 2}})

Given the following mongoDB documents for the Contacts collection, complete the next 3 questions [ { “_id”:1, “Contact”:{“fname”:“John”, “lname”:“Doe”, “Phone”:“9055551212”}, “balance”:1000}, { “_id”:2, “Contact”:{“fname”:“Jane”, “lname”:“Smith”, “email”:“jsmith@dom.com”}, “balance”:786.45}, { “_id”:3,“Contact”:{“fname”:“Raj”, “lname”:“Patel”, “email”:“rpatel@ema.com”}} ] Write the OUTPUT for the third statement (MongoDB Shell) below assuming the first 2 have already been executed successfully: > db.Contacts.update( {“_id”:2},{“$inc”: {“balance” : 12.45}}) > db.Contacts.update( {“_id”:1},{“$inc”: {“balance” : 19.99}}) > db.Contacts.find({“_id” : {“$lte” : 2}})

Database Systems: Design, Implementation, & Management

12th Edition

ISBN:9781305627482

Author:Carlos Coronel, Steven Morris

Publisher:Carlos Coronel, Steven Morris

Chapter3: The Relational Database Model

Section: Chapter Questions

Problem 10P

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