Monday, November 21, [Solution] Week 6: Note that not all students in the same class have the same exact number of assessments. What is the latency of the longest running operation to the collection, in milliseconds? You can verify that you’ve imported the data correctly by running the following commands in the mongo shell:. With it, you can test your code and look at the Feedback section. Note that this is only an example and not the actual document that you would be updating.

It will allow you to add blog posts with a title, body and tags and have it be added to the posts collection properly. Download the handout and import the grades collection using the following command. Which of the following queries can utilize at least one index to find all matching documents or to sort? You will be using these files for this homework, and for HW 3. If you have the mongodb driver installed correctly, this will print out the message ‘Answer: By fast, we mean that indexes should be in place to satisfy these queries such that we only need to scan the number of documents we are going to return. To do this, first download the hw

To start, please download sysprofile.

m101js homework 3.1

The areas where you need to add code are marked with XXX. If you select all the weather documents, you can sort first by state, then by temperature. Which of the following queries can utilize at least one index to find all matching documents or to sort? Then you can iterate through the documents and know that whenever the state changes you have reached the highest temperature for that state. There are entries with lots of comments and tags.


Newer Post Older Post Home.

If everything is working properly, you should be able to start the blog by typing: Write an aggregation query to answer this question.

There are hyperlinks from the post tags to the page that displays the 10 most recent blog entries for that tag. What is the latency of the longest running operation to the collection, in milliseconds? You will see a message below about your number of submissions, but you must submit this assignment using MongoProc. We have provided the full code for the blog application and you don’t need to make any changes, or k101js run the blog.

After you run the blog, you should see the message: From the top of this page, there was one additional program that should have been downloaded: When it says “user creation successful” and “user login successful”, you homewrok Turn in your assignment. Please enter it below, exactly as shown with no spaces.

Do this by opening a terminal window mac or cmd window windows and navigating to the directory so that the dump directory is directly beneath you. In this homework you will be enhancing the blog project to homeqork entries into the posts collection. Write a program in the language of your choice that will remove the lowest homework score for each student.

Posted by Unknown at Ankit Raina April 10, at 6: This involves calculating an average for each student in each class of all non-quiz assessments and then averaging those numbers to get a homswork average.


Hello from MongoDB!

When it says “Correct amount of data documents. Isolate those queries and homeeork explain to explore. Then install all the dependencies listed in the ‘package.

Now query the profile data, looking for all queries to the students collection in the database school2, sorted in order of decreasing latency.

[Solution] Week 6 : The Aggregation Framework : MJS: MongoDB for Developers

This is a sample document from the weather data collection: You will need to download one of the following versions of the MongoProc client, which will verify on your local machine port that the signup and login pages of the blog work properly.

To be clear, each student’s average should include only exams and homework grades. Use the weather dataset that you imported in HW 2. Nemco February 22, homwwork 8: Let us count the number of students we have: Remember, just remove a homework score. We are also providing a patriotic if you are an American data set for the blog. Then install the mongodb driver: The blog stores its data in the blog database in two collections, users and sessions.

m101js homework 3.1