HOMEWORK 5.3 MONGODB

Which of these statements is true? Now, what query would you run to get all the products where brand equals the string “ACME”? For this problem, we have used a subset of the data you previously used in zips. This method will simply verify that this simple cluster is up and running and return a result key. For this set, there are only documents and zip codes , and all of them are in New York, Connecticut, New Jersey, and California. If you notice that while importing, there are a few duplicates fear not, this is expected and will not affect your answer.

Most MongoDB queries involve javascript execution on the database server s. Start by downloading the handout zip file for this problem. Check all that apply. A city might have multiple zip codes. Which arrangement s of servers will allow you to be stay up as in, still able to elect a primary in the event of a failure of either data center but not both at once?

Homewok will be using the zip code collection data set, which you will find in the ‘handouts’ link in this page. Also, you will need a filtering step to get rid of all documents where the city does homewlrk start with the select set of initial characters.

What result does this expression give when evaluated? When you are done, run: Different states might have the same city name. For this problem, assume that a city name that appears in more than one state represents two separate cities. Which of these statements is true? Which arrangement s of servers will allow you to be stay up as in, still able to elect a primary in the event of a failure of either data center but not both at once?

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This method will simply verify that this simple cluster is up and running and return a result key. In this problem, ‘s oplog was effectively a “fork” and to preserve write ordering a rollback was necessary during ‘s recovery phase. It was only an issue when running with multiple processes that need to communicate, such as in the topics covering Replica Sets and Sharding.

Mongodb homework 5.3 .net

Your task is to calculate the class with the best average student performance. What is the output?

Import it into your mongod using the following command from the command line:. A city might have multiple zip codes. Using the aggregation framework, calculate the sum total homeowrk people who are living in a zip code where the city starts with one of those possible first characters.

For this set, there are only documents and zip codesand yomework of them are in New York, Connecticut, New Jersey, and California.

Choose the best answer:.

In this problem you will calculate the number of people who live in a zip code in the US where the city starts with one of the following characthers:.

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At the end I just want to say if you want to learn mongoDB, First practice with youself.

Mongodb homework .net

That is, have a voice field present in the limits subdocument. You must figure out the GPA that each student has achieved in a class and then average those numbers to get a class average. Based on the explain output, which of the following statements below are true? Prefered Cities to Live!

homework 5.3 mongodb

None of the above. Most MongoDB queries involve javascript execution on the database server s.

MongoDB for DBA’s M Homework week 5 | sadineni’s Blog

The documents look like this: Posted by SiteAdmin at .53 students achieved a class average of This comes from how you start the Windows command line interface, cmd. You need to group twice to solve this problem.

Please use the Aggregation pipeline to solve this problem. Some students have three homework homewrk, etc. In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog Check all that apply:.

homework 5.3 mongodb

How many documents do you have? Reconfigure the replica set so that the third member can never be primary.