What You'll Learn
• What a database is (in simple words) • How data is organized in tables • Why we call them "relational" databases
Think of it Like a Phone Book
Imagine you have a phone book where you store your friends' information:
- Name
- Phone number
- City
A database is just like a digital phone book! It stores information in an organized way so you can find it easily.
What is a Table?
A table is like an Excel spreadsheet. It has:
Columns = Categories (like NAME, AGE, COURSE) Rows = Each person's information Primary Key = ID number (makes each row unique!)
Why "Relational"?
Tables can connect to each other!
Example:
- Students table (stores student info)
- Classes table (stores class info)
- They connect because students take classes
Just like:
- Your contacts app connects to your messages app
- Your photos connect to albums
Real-World Examples
Databases are everywhere:
Instagram - Stores your photos and posts Amazon - Stores products and orders Schools - Stores students and grades Banks - Stores accounts and transactions
Key Points
✅ A database stores information digitally ✅ Tables organize data in rows and columns ✅ "Relational" means tables can connect ✅ Just like Excel, but much more powerful
What's Next?
Now you know WHAT databases are. Next, let's learn about the good and bad things about them!