Quiz 2 Basis Data

Quiz 2 Basis Data

University

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22 Qs

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Quiz 2 Basis Data

Quiz 2 Basis Data

Assessment

Quiz

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Computers

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University

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Practice Problem

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Putu Ciptayani

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22 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Gunakan database northwind, manakah perintah SQL yang tidak tepat untuk menampilkan data product dan kategorinya?

SELECT ProductID,ProductName,CategoryID,CategoryName

FROM products NATURAL JOIN categories;

SELECT ProductID,ProductName,CategoryName

FROM products INNER JOIN categories USING(CategoryID);

SELECT ProductID,ProductName,CategoryName

FROM products INNER JOIN categories ON products.CategoryID=categories.CategoryID;

SELECT ProductID,ProductName,CategoryName

FROM products JOIN categories;

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mekanisme yang dapat digunakan untuk mengubah sintaks pembuatan view adalah:

Menggunakan SQL UPDATE

Menggunakan SQL ALTER

Menggunakan SQL DROP kemudian CREATE

Menggunakan SQL DELETE kemudian CREATE

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Manakah dari view berikut yang bersifat updatable?

CREATE ALGORITHM=MERGE VIEW v_soal

AS SELECT SupplierID,CompanyName,Region FROM suppliers;

CREATE VIEW v_soal

AS SELECT Region, COUNT(SupplierID) AS jumlah FROM suppliers GROUP BY Region;

CREATE ALGORITHM=TEMPTABLE VIEW v_soal

AS SELECT SupplierID,City, Country FROM suppliers;

CREATE VIEW v_soal

AS SELECT DISTINCT Region FROM suppliers;

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Diketahui sintaks pembuatan view seperti berikut:

CREATE VIEW v_soal

AS SELECT ProductID,ProductName,SupplierID,CategoryID,UnitPrice,UnitsInStock FROM products

WHERE SupplierID=7 WITH CHECK OPTION;

Pilih pernyataan yang benar mengenai v_soal

v_soal tidak dapat menambahkan data baru ke dalam tabel products

Jika WITH CHECK OPTION dihilangkan, maka v_soal dapat menghapus semua data dari tabel products

Jika WITH CHECK OPTION dihilangkan, v_soal tidak akan bisa menghapus products dari supplierID 7

WITH CHECK OPTION membuat v_soal hanya bisa melakukan insert data product dengan supplierID 7

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Perintah SQL manakah yang akan menampilkan data produk yang harganya di atas rata-rata harga produk lainnya?

SELECT * FROM products HAVING AVG(UnitPrice) < UnitPrice;

SELECT * FROM products WHERE UnitPrice > AVG(UnitPrice);

SELECT * FROM products WHERE UnitPrice > (SELECT AVG(UnitPrice) FROM products);

SELECT *, AVG(ProductID) AS rata FROM products HAVING UnitPrice > rata;

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

SQL manakah yang akan menampilkan data produk yang tidak pernah terjual (tidak laku)

SELECT * FROM products WHERE productID NOT IN (SELECT ProductID FROM `order details`);

SELECT * FROM products WHERE productID IN (SELECT ProductID FROM `order details`);

SELECT * FROM products NATURAL JOIN `order details` WHERE ProductID IS NULL;

SELECT * FROM products NATURAL JOIN `order details` WHERE ProductID IS NOT NULL;

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

SQL manakah yang akan menampilkan data order yang dilakukan oleh customer dari PT ABC

SELECT * FROM orders WHERE CustomerID IN (SELECT CustomerID FROM customers WHERE CompanyName = 'PT ABC')

SELECT * FROM orders WHERE CustomerID = (SELECT CustomerID FROM customers WHERE CompanyName = 'PT ABC')

SELECT orders.* FROM orders NATURAL JOIN customers WHERE CompanyName = 'PT ABC'

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