HOMEWORK 4.4 MONGODB

Use the weather dataset that you imported in HW 2. To get started, please download hw Your assignment is to figure out the “State” that recorded the lowest “Temperature” when the wind was coming from the west “Wind Direction” between and Write a program in the language of your choice that will remove the lowest homework score for each student. Please provide the value corresponding to the “answer” key without the surrounding quotes from the document returned.

To get started, please download hw 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. But you can, for fun. 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.

Here are some URLs that must work when you are done. Workspace infoupdated a year ago mongodb-courses-mjs. Remember, just remove a homework homewrok. Write that text in the text box below. Reading clockwise from true north, the wind direction is measured by degrees around the compass up to degrees.

homework 4.4 mongodb

Now query the profile data, looking for all queries to the students collection in the database school2, sorted in order of decreasing latency. This homework is meant to give you practice using the “package. You might homeork to start by inspecting it in the Mongo shell.

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Hello from MongoDB!

When you login or sign-up, the blog will redirect to http: Isolate those queries and use explain to explore. Let us count the number of students we have: With the new schema, this problem is a lot harder and that is sort of the point. They can also choose to to .44 mongoProc to any 2. In this homework assignment you will be adding some indexes to the post collection to make the blog fast.

homework 4.4 mongodb

After you run the blog, you should see the message: You should see four files in the ‘blog’ directory: Then install all the dependencies listed in the ‘package. 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. With it, you can test your code and look at the Feedback section.

This is a sample document from the weather data collection: If you select all the weather documents, you can sort first by state, then by temperature. We are also providing a patriotic if you are an American data set for the blog.

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Please enter the name of the state that meets this requirement. We have removed parts of the code that uses the Node.

ibitlab/mongodb-courses-mjs

Which of the following queries can utilize at least one index to find all matching documents or to sort? But you can, for fun. If you goto http: When it says “user creation successful” and “user login successful”, you can Turn in your assignment. What is the latency of the longest running operation to the collection, in milliseconds? The blog home page The page that displays blog posts by tag http: In this problem, you will be using homeework old weather dataset.

Note that this requires Node.

To start, please download sysprofile. To confirm you are on the right track, here are some queries to run after you process the data with the correct answer shown:. This dataset holds the same type of data as last week’s grade collection, but it’s modeled differently.

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