• May 31, 2023

What Is MongoDB? Definition, Benefits, and How to Use It!

by Flexadia 4 months ago in Programming
What Is MongoDB? Definition, Benefits, and How to Use It!

What Is MongoDB? Definition, Benefits, and How to Use It!

MongoDB users continue to grow until it reaches 85 million users. This is of course inseparable from the ease, speed, and flexibility offered by this database system. However, is MongoDB the right choice for your project?

Come on, find out the answer! In this article, you will not only learn MongoDB on the surface but also the detailed information. Starting from understanding, the advantages, to how to use this database.

Curious, right? Read more!

What is MongoDB?

MongoDB is a type of NoSQL database that is quite popular for website development. In contrast to SQL-type databases which store data using table relationships, MongoDB uses documents in JSON format.

This is considered to make data management using MongoDB better. As a result, many large companies such as Adobe, Google, and eBay are using it.

Also Read: What is a DBMS? Definition, Functions, Advantages, Types of DBMS

This database system uses several important components, namely:

What Is MongoDB? Definition, Benefits, and How to Use It!

  • Database – is a container with a storage structure called a collection.
  • Collection – is a collection of data information in the form of documents. Collections are matched like tables that contain data in SQL databases.
  • Document – ​​is the smallest unit in MongoDB.

As the smallest unit, the document will contain rows of data without a specific schema, but in the form of a key-value pair structure. Keys are used to tracking objects with varying values, such as numbers, strings, or other complex objects.

So, here’s an example of data in MongoDB:

What Is MongoDB? Definition, Benefits, and How to Use It!

With this document format, MongoDB is able to accommodate more varied and complex data. In addition, you can also scale out the database to increase data capacity without disrupting server performance. That is what makes it one of the best database applications.

Also Read: What is PostgreSQL? Features, Advantages and Data Types

Oh yes, although MongoDB’s ability to scale out is indeed attractive for large companies, the database is also suitable for beginner projects. Still not sure?

Advantages of Using MongoDB for Your Project

Here are some of the advantages of MongoDB that will be useful for your project:

1. Faster Performance

MongoDB offers faster database performance than SQL-type databases. This is because this database uses documents in a lighter JSON format. Not only that but this database is also supported by Memcached which is capable of storing data on a large memory scale.

2. Easier Database Management

Database management through MongoDB will be much simpler and easier. Because it does not require a table structure that will get more complicated as more data is added. MongoDB will automatically create the table structure when you input data.

In addition, this database is also integrated with Javascript which is certainly quite familiar to developers. So, developers don’t need to learn new programming languages ​​like SQL to manage databases.

3. Capable of Accommodating Lots of Varied Data

MongoDB is able to accommodate more complex data because it uses a dynamic schema table. With this data schema, this database can store more varied data, ranging from structured to unstructured data.

Structured data is data whose information is easily obtained directly from the database, such as employee and sales data. Meanwhile, unstructured data requires analysis to get its value, such as data in the format of photos, videos, text, and sound on websites.

4. Can Manage Queries Better

MongoDB is a database that has the ability to handle queries well. In addition, access to data is also easy so you can see the results of complex or unstructured data quickly.

Let’s say you want to see data from the results of your blog comments. All you have to do is run the command to display the data document to get the data you want.

5. Has Scalability Capabilities According to Needs

As a NoSQL database type, MongoDB has the ability to scale out. That is, if your data needs increase, you can add several cloud servers to increase your database capacity.

This is of course different from the SQL type which requires you to scale up by buying new hardware with higher specifications.

With these capabilities, you can run big data programs for your business. Even large data spikes can be dealt with by sharing it across multiple cloud servers you’ve added.

6. Can Update Data Scheme Without Downtime

If in another database, the website or application must be in a state not accessed when you update the data structure. Well, in MongoDB, you don’t have to experience any downtime when those changes are made.

Why? This is because this database is designed to be accessible when updating schemas and data structures. So, there will be less disruption to the application or website during the data schema update process.

7. Can be used for free

MongoDB is a database system software that you can use for free, both for Windows, Linux, and macOS users. This is certainly the right choice if you are working on a small or personal project and don’t have a specific budget to buy a license.

How to Install MongoDB

After knowing the various advantages, let’s look at the tutorial on using this database system, starting from installing it on Ubuntu to creating the database.

1. Install MongoDB

To install it on Ubuntu, enter the following command in the Terminal:

sudo apt-get install MongoDB

2. Enable MongoDB

Then activate the database with the following command:

sudo systemctl enable mongodb

Once activated, then run with the following command:

sudo systemctl start mongodb

3. Check Status

To make sure MongoDB is up and running on your server, check the status of the MongoDB database with this command:

sudo systemctl status mongodb

If you see output like the following, it means that your MongoDB database is up and running.

What Is MongoDB? Definition, Benefits, and How to Use It!

MongoDB Basic Commands

After successfully installing and enabling MongoDB on Ubuntu, you need to learn some basic commands. Here are some basic MongoDB commands that are often used:

1. Enter the MongoDB Database

To enter the MongoDB database, you can use the following command:

mongo

The output will be like in the image below:

What Is MongoDB? Definition, Benefits, and How to Use It!

2. Create Databases

To create a database in MongoDB, you can use the command below. In this guide, we will create a database named admin-dev. You can replace the admin-dev command with the name of the database you are going to create.

use admin-dev

The output will be like in the image below:

What Is MongoDB? Definition, Benefits, and How to Use It!

3. View Databases

To see the currently used databases on the server, you can use the following command:

db

The output will be like in the image below. Each output will have different results, depending on the database that you have added to the server.

What Is MongoDB? Definition, Benefits, and How to Use It!

4. Deleting the Database

To delete the database, you can use the following command

db.dropDatabase()

The output will be like in the image below which means the admin-dev database has been deleted. The output will vary depending on which database was deleted.

What Is MongoDB? Definition, Benefits, and How to Use It!

5. Insert Data

In this guide, we will enter data into the admin-dev database. Here we will create and insert data into the admin-dev collection using the insert() command with the collection name “admin”.

Select the database using the following command:

use your_database_name

Enter data into your database using the following command:

db.admin.insert({“nama” : “Dapit Kurniawan”, “alamat” : “Jl. Ninjaku” , “jenkel” : “laki-laki”})

The output of the above command will be like the image below.

What Is MongoDB? Definition, Benefits, and How to Use It!

6. See the Collection List in the Database

To see a list of collections in the database, you can use the following command:

show collections

The output will be like in the image below. admin and person are data collections of database admin-dev.

What Is MongoDB? Definition, Benefits, and How to Use It!

7. View the contents of the Collection

To see the contents of the data collection, you can use the find command. In this guide, we will look at the contents of the data collection from the admin.

db.admin.find()

The output is as shown in the image below:

What Is MongoDB? Definition, Benefits, and How to Use It!

8. Viewing the contents of the collection in JSON format

To view the contents of the data collection in JSON form, you can use the following command. The Admin command is the name of the data collection we’ll be looking at. You can replace it with the name of the data collection you will see.

db.admin.find().pretty()

The output will be like in the image below, _id is the codename of the JSON file.

What Is MongoDB? Definition, Benefits, and How to Use It!

9. Seeing the Contents of the Collection, Only 1 Result

You can also view only 1 data collection in the database using the command below. In this guide, we will look at 1 data collection in the person collection.

db.person.findone()

The output of the above command is as shown in the image below. The findone command will output 1 data from the collection.

What Is MongoDB? Definition, Benefits, and How to Use It!

10. Deleting Data

To delete data, the first thing to do is check the JSON file name using .pretty. In this tutorial, we will delete data in the person collection. Copy the _id code and enter it in the following command.

db.person.remove({“_id” : ObjectId(“Insert_Your_Code_Here”)})

If the above command is successful, the output will be as shown below:

What Is MongoDB? Definition, Benefits, and How to Use It!

11. Changing Data

You can also make changes to existing data using the command below. In this guide, we will change the data in the admin collection. We will change the data information from the name, address, and gender of the data collection admin.

db.admin.update({“_id” : ObjectId(“5e231fd59e0e6311da623a04”)},{“nama” : “Amanda Belina”, “alamat” : “Jln. Taubat Nasuha”, “jenkel” : “Perempuan”})

The output is as shown in the image below. You can see the results of changes in name, address, and gender.

What Is MongoDB? Definition, Benefits, and How to Use It!

12. Deleting Collections

To delete a collection, you can use the following command.

db.Nama_Collection.drop()

The output will be like in the image below:

What Is MongoDB? Definition, Benefits, and How to Use It!

Why should you use MongoDB?

MongoDB is a type of document-based NoSQL database in JSON format. This database does not use standard tables and structures such as SQL-type databases.

MongoDB is increasingly being used by developers because of its various advantages, namely:

  1. Faster performance
  2. Database management is easier
  3. Able to accommodate a lot of varied data
  4. Able to manage queries better
  5. Scalability is easier to do
  6. Can update the data schema without any downtime
  7. Can be used for free

With these various advantages, you are certainly more confident to try it on your project. We have also provided an installation guide. Now, you can start creating a database for your best web application project. Good luck!