Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

MongoDB

From: Up and Running with NoSQL Databases

Video: MongoDB

MongoDB is a document database that uses JavaScript. This makes it similar to CouchDB, yet there are many features that distinguish it. First, querying for MongoDB is not done over HTTP. There are native drivers that are written for each language that you want Mongo. So that way you connect directly to the database rather than incurring the overhead of HTTP connections. Mongo does not have permanent CouchDB-style views that you set up. And finally, MongoDB only has master/slave replication. You can only write to the master and then that chooses which slave to write to.

MongoDB

MongoDB is a document database that uses JavaScript. This makes it similar to CouchDB, yet there are many features that distinguish it. First, querying for MongoDB is not done over HTTP. There are native drivers that are written for each language that you want Mongo. So that way you connect directly to the database rather than incurring the overhead of HTTP connections. Mongo does not have permanent CouchDB-style views that you set up. And finally, MongoDB only has master/slave replication. You can only write to the master and then that chooses which slave to write to.

Mongo is a consistent partition-tolerant database. All users should always get the same data back from MongoDB regardless of when they read it. Documents are partitioned using sharding. Each partition will have a subset of the documents. Shards are created based on the key you choose. This allows you to customize how Mongo partitions the database. MongoDB is structured around databases, collections, and records. A single database is intended for a single application. Collections are then used to organize records that are similar to each other.

Each individual record can have a different structure but you still use collections to organize them. The JavaScript-based querying that Mongo offers is somewhat similar to SQL. However, it's still is NoSQL database because you're ultimately using JavaScript to do the querying. Even though the querying is somewhat similar to SQL, MongoDB still has a schema-free structure. Individual records can have different field sets. And finally, MongoDB allows you to define MapReduce functions just like CouchDB does.

While MongoDB is a document database with some things in common with CouchDB, it ultimately differs in the way you connect, the way it partitions data, and the way you run queries.

Show transcript

This video is part of

Image for Up and Running with NoSQL Databases
Up and Running with NoSQL Databases

29 video lessons · 11489 viewers

Joseph LeBlanc
Author

 

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Up and Running with NoSQL Databases.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.