MongoDB Practice Exercises: Essential Techniques for Mastering the Framework

MongoDB is a NoSQL document-based database management system. It stores data in the form of documents, which are similar to JSON objects, and each document can have a different structure. Here is a short practice on MongoDB:

1. Install MongoDB on your computer if you haven’t already done so. You can download the latest version from the official MongoDB website.
2. Once MongoDB is installed, open a terminal or command prompt and start the MongoDB server using the following command: mongod
3. Open another terminal or command prompt and start the MongoDB shell by typing mongo. You should now be in the MongoDB shell and able to run MongoDB commands.
4. To create a new database, use the following command: use database_name. Replace “database_name” with the desired name for your database.
5. To create a new collection in the database, use the following command: db.createCollection("collection_name"). Replace “collection_name” with the desired name for your collection.
6. To insert a new document into the collection, use the following command: db.collection_name.insertOne({key1: value1, key2: value2, ...}). Replace “collection_name” with the name of your collection and replace “key1”, “key2”, etc. with the keys and values for the document you want to insert.
7. To query all documents in the collection, use the following command: db.collection_name.find({}). Replace “collection_name” with the name of your collection.
8. To update a document in the collection, use the following command: db.collection_name.updateOne({query}, {$set: {key1: value1, key2: value2, ...}}). Replace “collection_name” with the name of your collection, replace “query” with the query that identifies the document you want to update, and replace “key1”, “key2”, etc. with the keys and values for the update.
9. To delete a document from the collection, use the following command: db.collection_name.deleteOne({query}). Replace “collection_name” with the name of your collection and replace “query” with the query that identifies the document you want to delete.
10. To exit the MongoDB shell, use the following command: exit.

These are just a few of the many commands you can use in MongoDB. This practice should give you a basic understanding of how to work with MongoDB and its collections and documents.