Database mein table ek data structure hoti hai jo related data ko organized taur par store karne ke liye use hoti hai. Tables database ke logical structure ko represent karte hain jismein rows aur columns hote hain. Har row ek record ko represent karta hai aur har column ek specific data type ke data ko store karta hai.
Kuch key points about database tables:
1. Rows: Tables mein rows ya records hote hain jo individual data entries ko represent karte hain. Har row ek unique identifier (primary key) ke saath associated hoti hai jo us record ko uniquely identify karta hai.
2. Columns: Tables mein columns hote hain jo data types ke basis par define kiye jaate hain. Har column ek specific type of data ko store karta hai, jaise ki strings, numbers, dates, aur others.
3. Fields: Har column ka ek field hota hai jo specific data entry ko represent karta hai. Field ka type us column ke data type ke according hota hai.
4. Primary Key: Har table mein ek ya multiple columns hote hain jo ek unique identifier ke taur par kaam karte hain. Yeh column(s) primary key ke roop mein define kiye jaate hain aur har row ko uniquely identify karte hain.
5. Foreign Key: Kuch tables mein ek column foreign key ke roop mein define kiya jaata hai jo dusre table ka primary key refer karta hai. Isse data ko relate kiya ja sakta hai multiple tables ke beech mein.
6. Table Schema: Table ka structure aur definition uski schema ke roop mein define ki jaati hai. Schema mein table ka name, column names, data types, constraints, aur indexes define kiye jaate hain.
Database tables ka istemal data ko organize, store, aur retrieve karne ke liye hota hai. Har table ek specific type ka data represent karta hai, jaise ki users, products, orders, aur others, aur in tables ke through applications data ko access aur manipulate kar sakte hain.
