Mohit
24.2K posts

Mohit
@codewith55
Dev | Turning coffee into code
india शामिल हुए Temmuz 2019
588 फ़ॉलोइंग1.1K फ़ॉलोवर्स

Backend Series - Day 6/30.
Your server can receive requests.
Your server can send responses.
But where does the data actually live?
Not in your code. Not in memory.
In a database.
What happens without a database?
You build a server. User creates an account.
You store it in a variable: let users = ["Rahul", "Priya"]
Server restarts.
Variable is gone.
Rahul and Priya don't exist anymore.
A database fixes this. Data persists forever
What is a database?
Just a system designed to:
> Store data permanently
> Retrieve it fast
> Update it safely
> Delete it when needed
Sound familiar?
That's CRUD. will go deep on it.
A database is just CRUD - done reliably, at scale.
Two types you must know:
SQL (Relational)
Data lives in tables. Like Excel sheets.
Rows and columns. Strict structure.
Examples: PostgreSQL, MySQL, SQLite
NoSQL (Non-relational)
Data lives in flexible formats.
Like JSON objects. No fixed structure.
Examples: MongoDB, Redis, Firebase
SQL example - a users table:
| id | name | email | age |
|----|-------|------------------|-----|
| 1 | Rahul | rahul@gmail.com | 24 |
| 2 | Priya | priya@gmail.com | 22 |
Every row = one user
Every column = one property
Clean. Structured. Consistent.
NoSQL example - same data in MongoDB:
{
"id": 1,
"name": "Rahul",
"email": "rahul@gmail.com",
"age": 24,
"hobbies": ["cricket", "coding"]
}
Notice "hobbies" - an array inside the object.
SQL can't do this easily.
NoSQL handles flexible, nested data naturally.

English

My intention with “update” was improving the actual job-search experience:
- Better job recommendations
- Removing ghost / outdated job posts
- Proper company & recruiter verification
- Better filtering for skills, remote roles, salary, etc.
I don’t know why dating came into the middle of this
Or do only dating apps deserve updates?
Shruti@sukoooonnn
@zavxai Why do u expect to update them bro Connecting people for dating instead of work ?
English





































