
TIN HỌC HK2

Quiz
•
Other
•
10th Grade
•
Medium
Nghi Phương
Used 5+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu lệnh SQL nào dùng để tạo CSDL?
create database
create table
alter table
update database
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CSDL coffee_shop gồm bao nhiêu quan hệ?
3
4
2
6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bảng menu gồm bao nhiêu thuộc tính?
7
2
5
4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khóa chính của bảng invoice là gì?
invoice_id
invoice_date
customer_id
item_id
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để tạo bảng customers chứa dữ liệu của khách hàng, câu lệnh SQL được viết như thế nào?
alter table customers (
… );
alter table `customers` (
… );
create table customers (
… );
create table `customers` (
… );
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để khai báo thuộc tính customer_id là khóa chính có 6 ký tự, câu lệnh SQL được viết như thế nào?
create table `customers` ( `customer_id` char(6) primary key,… );
create table customers ( `customer_id` char(6) primary key,… );
create table `customers` ( `customer_id` char primary key,… );
create table `customers` ( customer_id char(6) primary key,… );
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
`item_id` char(3) primary key,
`item_name` varchar(100),
`item_type` char(7),
`price` int unsigned,
`real_name` varchar(100)
Theo khai báo trên, thuộc tính price có kiểu dữ liệu là gì?
số nguyên không âm
chuỗi kí tự
số nguyên
chuỗi kí tự có số
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