Description
Overview
This Project is worth 100 points (out of 1000) toward your final grade. It is due on Tuesday Nov
27th, at 11:59 p.m. No extension allowed for this assignment. Your project submission should
be a document saved and submitted as a PDF file via the link found in the Project section of
“Week Twelve” in Moodle which is the same place where you found this file.
This project will give you hands-on practice in working with the MongoDB “NoSQL” database
software.
Objectives
1. Students download and install MongoDB
2. Students create a MongoDB database and a collection of documents
3. Students load a lot of meaningful document-based data into the collection
4. Students “query” the document collection to research a topic and answer questions
Deliverables
Capture screen shots to show evidence of having completed the Task 1 described below. Number
each screen shot with the number of the assigned operation/task (1 – 8). Assemble (Copy &
Paste) all screen shots into a document. Save the document as a PDF.
Submission
Use the submission link in the Project Assignment section of the Week 12 Moodle — which is
the same place where you got this file.
This is an individual assignment, no collaboration allowed, each one must submit your own final
deliverable for this assignment
Interview Grading
Interview grading sessions will be scheduled for Wednesday-Thursday-Friday Nov 28-30.
You must attend your interview grading meeting to earn points for Task 2. During the meeting,
you will be asked some questions related to this data set. You should bring your laptop on which
you have installed MongoDB to your interview grading session.
Introduction:
The following links are helpful for giving an Introduction and basic queries for mongoDB:
1. https://www.tutorialspoint.com/mongodb/mongodb_overview.htm : This link provides
basic overview of mongo db and the basic queries for inserting documents, updating
documents, query documents etc.
2. https://www.guru99.com/mongodb-tutorials.html#1 : This is a beginner tutorial and also
has links for installing and running mongoDB with images which may be helpful for
students initially.
3. https://docs.mongodb.com/manual/introduction/ : The official documentation page of
mongoDB.
Installation:
The following links are helpful for giving an Instructions for the installation of mongoDB:
Mac System:
1. https://docs.mongodb.com/manual/tutorial/install-mongodb-on-os-x/ : I have personally
tried the installation and it works without issues. One input is that the .bashrc file in mac
is /Users/apple/.bash_profile.
Windows System:
2. https://docs.mongodb.com/tutorials/install-mongodb-on-windows/ : This is also the
official documentation for windows installation.
Linux System:
3. https://docs.mongodb.com/manual/administration/install-on-linux/ : The official
installation for linux installation.
4. https://docs.mongodb.com/manual/installation/ : This link basically shows the details
about the operating systems supported by mongoDB.
5. The students can install the community edition of mongoDB as it is freely available.
In the following 2 tasks, you will have chance to play with different basic operations in
MongoDB, and also use these tools to learn with a real-world data set, and answer following
questions based on the data set.
Task 1: Play with different basic operation in MongoDB (20 points)
1. Create a database:
a. use DATABASE_NAME
i. Ex: use new_mongo_db
ii. The above command will create a database if it does not exist and uses the
database if it already exists.
iii. Replace the DATABASE_NAME with the name of the database you would
want to create.
2. Drop a database:
a. db.dropDatabase()
i. Ex: >use new_mongo_db
switched to db new_mongo_db
>db.dropDatabase()
ii. First you need to switch to the database that has to be dropped. The use the
above command to drop that database.
3. Creating a collection:
a. db.createCollection(name, options)
i. Ex: >use new_mongo_db
switched to db new_mongo_db
>db.createCollection(“test_collection”)
{ “ok” : 1 }
ii. The above command creates the collection. But giving some initial options
along will be highly useful.
1. >db.createCollection(“mycol”, { capped : true, autoIndexId : true, size :
6142800, max : 10000 } )
{ “ok” : 1 }
2. For more information on the options, please check the following
link.
a. https://docs.mongodb.com/manual/reference/method/db.cre
ateCollection/
iii. In mongoDB, it is not necessary to create a collection. When a new
document is inserted, mongoDB creates a collection automatically.
4. Dropping a collection:
a. db.COLLECTION_NAME.drop()
i. Ex: >use new_mongo_db
switched to db new_mongo_db
>db.test_collection.drop()
True
ii. First go to the selected database and then use the above command to delete
the collection
5. Insert a document:
a. db.COLLECTION_NAME.insert(document)
i. Ex: db.test_collection.insert({
ii. _id: ObjectId(),
title: ‘Mongo Db practice’,
description: ‘this class is about MongoDB’
})
iii. Replace the COLLECTION_NAME with the name of the collection of your
choice
6. Query a document:
a. db.COLLECTION_NAME.find()
i. Ex: db.test_collection.find().pretty()
ii. The above query will display the documents present in the collection.
7. Update a document:
a. >db.test_collection.update(SELECTION_CRITERIA, UPDATED_DATA)
i. Ex: >db.test_collection.update({‘Heading’:’MongoDB Tutorials’},{$set:{‘Heading’:’New
MongoDB Tutorials’}})
ii. The above example is used to update the documents that contain
‘Heading’ as ‘MongoDB Tutorials’ to ‘New MongoDB Tutorials’
8. Delete Document:
a. db.COLLECTION_NAME.remove(DELLETION_CRITTERIA)
i. Remove only one record:
1. db.test_collection.remove({ status : “P” },1)
2. Here the first document which has this key value pair will be
deleted.
ii. Remove all records matching a condition:
1. db.test_collection.remove({ status : “P” })
2. Here all the documents which have this key value pair will be
deleted.
Task 2: Use real-world data set to answer the following question (80 Points)
1. Download the JSON dataset from Moodle, its named as “data.json”
2. From your terminal, type the following command, and the result should look like that:
mongoimport –db test –collection restaurants –drop –file ~/Desktop/data.json
The above command converts the json file and stores it as a set of documents with the collection
name of “restaurants”.
3.Answer the following sample questions by writing queries and displaying the results. Note:
The zip codes will be in the “_id” field of each document in the collection.
• List the five least populated zip codes in Colorado
• List the zip code and population for three zip codes in Brooklyn.
• How many zip codes are there altogether in California, Arizona, and New Mexico?
• List the total population in each state
You do not need to submit anything on task 2. Your grade for this part will be determined
through interview grading with the graders or the professor.
Expectations in interview grading
Interview grading sessions will be scheduled for Wednesday-Thursday-Friday Nov 28-30
In the interview grading session, you must attend your grading meeting to qualify for points for
Task 2.
If you miss your meeting with graders/professors (without notifying graders/professor
ahead of time with a suitable reason), this may result in a zero grade for Task 2 of the
assignment. The graders/professor are under no obligation to reschedule your appointment if you
miss your meeting, so don’t miss this!
During the meeting, you will be asked about 3-4 questions related to this data set. You will need
to type/write the query in your computer/paper and show your output to graders/professors in
order to get credit.
You should bring your laptop on which you have installed MongoDB to your interview
grading session.
