Worksheets13-mavzu. MongoDB asoslari va hujjatli model
Total questions: 11
Worksheet time: 7mins
MongoDB’da yangi baza yaratish uchun qaysi buyruq ishlatiladi?
use myDB
create database myDB
db.createDatabase("myDB")
mongo use myDB
students nomli collection qo‘lda qanday yaratiladi?
Quyidagi kod nima qiladi?
db.students.insertOne({name: "Ali", age: 23})
Collection yaratadi
Bitta hujjat qo‘shadi
Hamma hujjatlarni o‘chiradi
Ko‘p hujjat qo‘shadi
Quyidagi kod qanday natija beradi?
db.books.insertMany([ {title: "Book A", pages: 100}, {title: "Book B", pages: 200} ])
Collection o‘chadi
Faqat bitta hujjat qo‘shiladi
2 ta hujjat qo‘shiladi
Error beradi
MongoDB serverdagi barcha bazalarni ko‘rish uchun qaysi buyruq ishlatiladi?
MongoDB serverdagi barcha bazalarni ko‘rish buyrug'ini kiriting?
(a)
Tanlangan bazadagi collectionlar ro‘yxatini ko‘rish uchun qaysi buyruq ishlatiladi?
show tables
show collections
db.listCollections()
db.collections
students collectionni to‘liq o‘chirish uchun qaysi buyruq ishlatiladi?
db.students.remove()
db.students.drop()
db.dropCollection("students")
db.students.deleteAll()
Joriy bazani to‘liq o‘chirish uchun qaysi buyruq ishlatiladi?
db.dropDatabase()
drop db
db.removeDatabase()
delete database
Quyidagi buyruq natijasida necha hujjat qo‘shiladi?
db.products.insertMany([
{title: "Laptop", price: 1000},
{title: "Monitor", price: 300},
{title: "Mouse", price: 25}
])
(a)
Agar siz db.books.find() ishlatsangiz, nima bo‘ladi?
Hamma bazalarni ko‘rasiz
books collectionidagi hujjatlar ko‘rsatiladi
Collection o‘chiradi
Yangi collection yaratiladi
