Then import into your blog database as follows:. The documents look like this: For this set, there are only documents and zip codes , and all of them are in New York, Connecticut, New Jersey, and California. Some students have three homework assignments, etc. You must figure out the GPA that each student has achieved in a class and then average those numbers to get a class average. Email required Address never made public. Fill in your details below or click an icon to log in:

Please calculate the average population of cities in California abbreviation CA and New York NY taken together with populations over 25, You are commenting using your Facebook account. For example, to extract the first digit from the city field, you could write this query:. Import it into your mongod using the following command from the command line:. A set of grades are loaded into the grades collection.

Mongodb m101j homework 5.1 this problem, assume that a city name that appears in more than one state represents two separate cities. The project operator can extract the first digit from any field. Those students achieved a class average of Leave a Reply Cancel reply Enter your comment here For example, to extract the first digit from the city field, you could write this query:.

A city might mongodb m101j homework 5.1 multiple zip codes. Then import into your blog database as follows:. You must figure out the GPA that each student has achieved in a class and then average those numbers to get a class average.

Some students have three homework assignments, etc. Note that not all students in the same class have the same exact number of assessments. Once again, you will be using the zip code collection, which you will find in the ‘handouts’ link in this page. To help you verify your work before submitting, the author with the fewest comments is Cody Strouth and he commented 68 times. If you imported it correctly, you can go to the test database in the mongo shell and conform that.

You need to group twice to solve this problem. Now use the aggregation framework to calculate mongodb m101j homework 5.1 author with the greatest number of comments. Please round the answer to a whole number. About Me Kunal Saxena. You will need to mongodb m101j homework 5.1 change your projection to send more info through than just that first character. Notify me of new comments via email. Note that not all students in the same class have the same exact number of assessments.

You are commenting using your Facebook account. The documents look like this: In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog. We will be mongodb m101j homework 5.1 the same basic dataset as last week, with posts and comments shortened considerably, and with many fewer documents in the collection mongodb m101j homework 5.1 order to streamline the operations of the Hands On web shell.

Import it into your mongod using the following command from the command line: This involves calculating an average for each student in each class of all non-quiz assessments and then averaging those numbers to get a class average.

Your task is to calculate the class with the best average student performance. A set of grades are loaded into the grades collection. This is why there are only documents and zip codesand all of them are in New York, Connecticut, New Jersey, and California.

### MongodbChamps: MJ: MongoDB for Java Developers Homework

For this problem, we have used a subset of the data you previously used in zips. The answer for CT and NJ using this data set is Once you’ve found the correct answer with your query, please choose your answer below for the most prolific comment author. For this problem, assume that a city name that mongodb m101j homework 5.1 in more than one state represents two separate cities.