76 lines
2.0 KiB
Markdown
76 lines
2.0 KiB
Markdown
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# C1 - MongoDB Connectivity
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**Problem Statement:** Write a program to implement MongoDB database connectivity with PHP /python /Java Implement Database navigation CRUD operations (add, delete, edit etc.)
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---
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## Pre-requisites (with installation command for Ubuntu):
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1. Python3 - `sudo apt install python3`
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2. pip - `sudo apt install python3-pip`
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3. pymongo - `pip3 install pymongo` OR `pip3 install pymongo --break-system-packages` (installs it system-wide)
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## Instructions
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1. First, open the Terminal and log in to MongoDB:
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```shell
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mongo
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```
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2. Now, in Mongo we need to initialize the database and tables:
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```json
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// Create database
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use connectMe;
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// Create collection
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db.createCollection("students");
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// exit
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exit
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```
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> We need to `exit` from Mongo shell since the work there is done for now.
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3. Create a new file `connectMongo.py` with the following contents:
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```python
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from pymongo import MongoClient
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client = MongoClient("mongodb://127.0.0.1:27017")
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database = client.connectMe
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collection = database.students
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collection.insert_one({"roll":"21", "name":"Stewie"}) # insert operation
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print("Inserted")
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collection.insert_one({"roll":"22", "name":"Foxy"}) # insert operation
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print("Inserted")
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collection.update_one({"roll": "21"}, {"$set": {"roll": "20"}}) # update operation
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print("Updated")
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collection.delete_one({"roll": "22"})
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print("Deleted")
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client.close()
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```
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4. Open Terminal and run the above program:
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```shell
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python3 connectMongo.py
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```
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> [!NOTE]
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> This step assume you have stored the file in home directory or you know how to change the current working directory.
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5. That's it! You can view the changes in Mongo by logging in using `mongo` and viewing the table:
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```json
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USE connectMe;
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db.students.find();
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```
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> [!Tip]
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> This guide assumes your `mongo` shell does not have any password for root user.
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> [!WARNING]
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> Never use `root` as password in production. Use a strong password. This guide uses `root` as password for simplicity and educational purposes.
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---
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