Write a SELECT statement to list courses that have the course number 20 as a prerequisite.
What will be an ideal response?
```
SELECT *
FROM course
WHERE prerequisite = 20```
You might also like to view...
____ graphic files in the GIF format have the file extension .gif.
A. Bitmap B. Vector C. Indexed D. Concatenated
Freezing rows and/or columns
A) enables you to adjust settings to control how the worksheet will print. B) indicates where data starts on a new printed page. C) keeps them visible as you scroll through a worksheet. D) collects structured, related data in columns and rows.
You are having issues with the back cover on your phone. It comes off on its own or will not properly sit on the phone. What is probably the problem?
A. The MicroSD card is not installed properly B. The battery needs to be replaced C. The charging port is bent D. The smartphone has a non-OEM cover.
?
Sandra is working with an XML file containing product orders with the structure shown in the accompanying figure. She was just introduced to step patterns, and would like to incorporate them into the style sheet she is developing to display the orders data. She comes to you for help in developing expressions incorporating step patterns.
?Sandra would like to write an expression to show only those orders that have a preceding sibling containing the sameorderDate. Which of the following do you tell her is the correct expression?
A. ?orderDate=preceding::order/orderDate B. ?not(orderDate=preceding::order/orderDate) C. ?orderDate=ancestor::order/orderDate D. ?not(orderDate=ancestor::order/orderDate)