Jack Wallen shows you how easy it is to create a MongoDB database and collection using the Compass GUI.
Now that you have the MongoDB Compass GUI installed, you might be wondering what you can do with it? The answer is pretty simple—just about anything you need. The Compass GUI makes it very easy to create and manage your MongoDB databases.
SEE: Hiring Kit: Database engineer (TechRepublic Premium)
I want to show you just how easy it is to create a MongoDB database and then add a collection. For those who don’t know, a collection is a NoSQL term that refers to a group of MongoDB documents. Collections are to MongoDB what a table is to a relational database (such as MySQL).
Let’s dive right into this.
What you need
I will assume you’ve already deployed MongoDB and Compass (read the how-to in the link above for more information). With those two pieces of the puzzle taken care of, it’s time to create your first database.
How to create a database with Compass
The first thing we’ll do is create a database that will house our collection. Log into Compass and then click the Databases entry in the sidebar (Figure A).
Figure A
In the resulting window, click Create database. You will then be prompted to name your new database (Figure B).
Figure B
Not only will you be asked to give your new database a name, but also a collection name. This will create an initial collection in your new database. The initial collection is a requirement, but you are not limited to a single collection in the database.
After the database is created, click on it in the database listing and you’ll see the initial collection listed (Figure C).
Figure C
You can then create a new collection by clicking Create collection, which will prompt you to give the new collection a name (Figure D).
Figure D
Click Create Collection and you’ll be sent back to the database window.
How to create a document in a collection
The next step is to create your first document within a collection. To do that, click the name of the collection you want to work with to reveal the collection interface (Figure E).
Figure E
Click the ADD DATA drop-down and then select Insert Document. This is where Compass veers away from the simple. Instead of offering a handy GUI interface to add a document to the collection, you have to type (or paste) the entry manually. Here’s a sample document to be added to a published collection in the books database. Let’s say we want to insert a single document into the collection. The document code will look like this:
"title" : "The Haunting of Lilly Marchbanks", "author" : "Jack Wallen", "published" : "yes"
You would add the above code in the editor, replacing the default line:
* Paste one or more documents here
So when you click Insert document, the editor will open (Figure F).
Figure F
To enter (or paste) your document line such that it looks like:
{
"_id": {
"$oid": "624f0977e276a6c6caf108c2"
},
"title": "The Haunting of Lilly Marchbanks"",
"author": "Jack Wallen",
"published": "yes"
}
Compass will automatically assign a random string to the _id field, so you won’t have to bother with that.
Once you’re finished, click Insert and the document will be added to the collection. One very handy thing you can do next is to clone a document. Once you’ve cloned a document, you can easily change the values for the fields.
To clone a document, click the Clone icon (directly to the left of the trash icon) associated with the document in question (Figure G).
Figure G
Edit the values in the entry (Figure H), and click Insert.
Figure H
You can also import a document into a collection. Create the document in JSON format like so:
[
{
"title": "I Zombie I",
"author": "Jack Wallen",
"published": "yes"
},
{
"title": "Klockwerk Kabaret",
"author": "Jack Wallen",
"published": "yes"
},
{
"title": "Defying Gravity",
"author": "Jack Wallen",
"publisehd": "yes",
"publisher": "Devil Dog Press"
}
]
Save the file with a name like compass_import. Within Compass, click the ADD DATA drop-down and select Import File. In the resulting window (Figure I), click JSON and then click Select a file. Navigate to (and select) the compass_import file and then click IMPORT.
Figure I
When the import is finished, click DONE and you should see all of your new documents added.
For those looking to make working with documents in Compass easiest, the best method is using the Import feature.
And that’s all there is to using the MongodB Compass GUI to create databases and documents. This database management system is a great option for those looking to get into housing massive stores of data with very complex relationships.
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