MongoDB - Getting Started

-
What is MongoDB?

MongoDB is a database that was found in 2007 that is based on the concept of having a non-structured query language. It is powerful, open source and uses a document-oriented data model that presents many benefits such as being easy to scale, faster access of data(even when working with large data sets) and not the mention being heavily supported. These attributes keep MongoDB ahead of its competition and are the reasons why it is still being used in many tech companies today.

Benefits of MongoDB

  1. Flexibility - If you are a developer that despises the concept of rows, columns and complex joins, then you will definitely feel at ease working with MongoDB. MongoDB uses collections(which are tables in Relational Database Management Systems) which can contain a set of documents. These documents can then vary between one another which allows them to be more dynamic since they do not have to abide to the defined structure. To take the whole dynamic concept even further, fields that are shared between documents can even have different types of data.
  2. Security - With MongoDB, you can expect a decrease in database downtime, if any, with its ability to duplicate data seamlessly over multiple servers. This reduces the risk and impact of failures ranging from machine related to data center related failures. Also, being a NoSQL database system, it cannot be vulnerable to attacks such as SQL injection. Because of these risk-reducing advantages, MongoDB can be appropriate for applications that are vital to their organization and opens up a field of possibilities for applications that do not make sense or not even possible with traditional relational databases. 

MongoDB for Windows

 With over 110 million downloads in more than 100 countries, it is safe to say that MongoDB will be a worthy recognizable addition your resume. Lets begin!


  • Select Complete as the setup type
  • Based on personal preference, you can choose whether or not to download MongoDB Compass(not necessary in terms of this tutorial)
To check if the install was successful...

  • In your file manager, check for the MongoDB folder under Local Disk(C:) -> Program Files.
  • From the MongoDB folder, go to Server -> [version number] -> bin.
  • Open up the MongoDB shell by double clicking mongo.

MongoDB CRUD Commands
A great thing about MongoDB is that it automatically creates databases and collections once an entry is inserted, which speeds up and simplifies the data input process. Let's get to know more about MongoDB starting off with these simple commands.
  • show dbs - displays the complete list of databases that are currently on the server.
  • use <db-name> - switches to a database with the specified name. If the database does not exist, MongoDB will create one. Ex. use test
  • db.<collection-name>.insert({<document>}) - inserts a document under the specified collection name in the currently used database. If the collection does not exist, then MongoDB will create the collection to be inserted with the document. Ex. db.users.insert({isFirst: true})
  • show collections - displays the complete list of collections in the currently used database.
  • db.<collection-name>.find() - displays the complete list of entries under the specified collection name. Inside the parameters, we can even input arguments to refine our search. The arguments follow a similar syntax when inserting an document. Ex. db.users.find({isFirst:true})

  • db.<collection-name>.update({_id: <id-value>},{$set :{<field>:<value>}}) - updates the document that has an _id that matches the specified id-value with the new field and value under the specified collection name.  Ex. db.users.update({_id : ObjectId("5ef127fd0dd82c092700ebad")},{$set :{"isFirst":true}})
  • db.<collection-name>.drop() - drops all the documents under the specified collection before dropping the collection itself. This automatically drops the database afterwards if there are no longer any existing collections.
  • db.dropDatabase() - drops the current database and all of its entries. Be sure to run use <database-name> before the command to ensure you are as a precaution.
Conclusion
MongoDB is one of the great open source tools you can implement in your stack. From its benefits such as flexibility, security, speed combined with a simple setup procedure, you can expect a great performance increase compared to traditional relational databases. Hence why it is still prevalent in the modern tech industry to this day!

Comments

Post a Comment

Popular posts from this blog

Code Quality Assurance - The Best Practices

-
Image
Code Quality Code quality is important, essential and perhaps the most overlooked when it comes to any type of project. Especially in the modern tech industry, code quality has become vital to the performance of the whole application and the overall user experience. It is no longer just about "making it work" anymore. Good code is not only a result of merely keeping it simple or removing unused features, as personal or peer code reviews are the main contributing factors when it comes to ensuring product quality and a collaborative environment between your programmers. Code quality assurance may be difficult as the project capacity increases, so here are some of the top valued practices I've gathered and learned so far in my career that you can implement today for your project's benefit. Peer Review Peer code reviews can often seem unproductive at times, especially in a big project with strict deadlines. However, they are the most effective when the reviewers...
Read more

An Introduction to Flex Layout and Angular Material

-
Image
Flex Layout What  - Flex Layout was announced by the Angular team as a UI layout library that is based on styling and written in pure TypeScript. Originating from CSS Flexbox, it allows users to create responsive page layouts without the use of classes and styling files like css or scss.  When  - Flex Layout requires Angular version 4.1^ and works best when paired with Angular Material but it can also be independent. It is mainly a solution for applications that require heavy responsive behaviors, especially desktop and mobile friendly applications as it allows the developer to anticipate the user's screen size by setting breakpoints in which to make the responsive transition. Flex Layout Installation Setting up Flex Layout for Angular is as easy as using it. Lets get started! Install  - type the following command in your project's command line. npm install @angular/flex-layout --save Import  - import FlexLayoutModule  into your app ...
Read more

NgRx Store - The Basics

-
Image
Introduction The NgRx Store is a common framework you may come across in a lot of Angular applications, and for good reasons. The main reason is the ability to group, organize and funnel data, which can present many benefits not just for the application itself, but also for the developer. In this post, we will discuss the basic fundamental pieces of the NgRx framework and how we can use it to its full potential. NgRx - State and Accessibility The State is where the state of the application is defined and managed. The Initial State is where we can have the ability to set values that we want our state to start off with, under the type rules that are set in the implemented interface. For complex applications, it allows us to nest one state with even more states, called Feature States , in a sort of parent-child relationship, in order to organize datasets that fall under certain categories. The State is immutable and read-only , and in order for angular components to a...
Read more