Brief introduction into MongoDB for those with little or no experience in databases

1. {title : Starting with
MongoDB}
by César Cruz

2. About Me
• In search of my Zen programming language
• Computer Engineering Student
• President ACM-ECE 2012 - 2013
• Founder hackPR @ UPRM
• Opinionated
• @sezalcru

3. NoSQL
- Non-relational database
- Documents, Key- Value pairs, Graphs and Objects
- Dynamic Schemas
- Store object in favor of tables
- Quick setup and integration

4. So, MongoDB
- Document oriented, NoSQL
- Document structure is similar to JSON object
- Dynamic Schema
- Forgiving
- JavaScript query language

5. Documents
Image courtesy of @mongoDB

6. Go for MongoDB when…
- Developing a quick prototype
- Quick refactoring in development
- Non-relational data
- Log data
- Metadata

7. Re-think MongoDB if…
- Related data***
- Joins
- Redundancy will be an issue
- Performance can be an issue
***This is a biggie

8. Docs and Drivers
- Open Source Project
- Great documentation and community support
- Docs at: docs.mongodb.org
- Support for almost all major languages

9. Installation

10. OSX
Using homebrew: brew install mongodb
Or
Download package from mongoDB website

11. Windows
Download installation package from website

12. Linux
Head to mongoDB website, in downloads section,
select appropriate distribution.
Download package distribution
Or
sudo apt-get install -y mongodb-org

13. Configuration
MongoDB by default stores data in the /data/db
parent directory. Create this directory using
mkdir -p /data/db
MongoDB must have read and write access to this
directory

14. Start

15. Command Line Interface
MongoDB comes with a built in Command Line
Interface (CLI). To start the CLI type mongo into the
console. The CLI will be your best friend for
debugging.

16. Basic Commands
- Show current database: db
- Show available databases: show dbs
- Switch to database: use databaseName
- Show collections: show collections
- Basic JS Syntax

17. Ok, let’s assume a
Collection of Articles

18. To define an Article, we would need, at least:
Title
Contents
Author
Date Created

19. An Article document would look like this:

20. Create
Read
Update
Delete

21. Create

22. Read

23. Update

24. Delete

25. Debugging
A few useful commands when debugging in mongo
are:
db.stats()
db.serverStatus()

26. Questions?

27. Demo time