DATABASE SYSTEM CONCEPTS LCPO
DATABASE SYSTEM CONCEPTS LCPO
7th Edition
ISBN: 9781265586577
Author: SILBERSCHATZ
Publisher: MCG
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Chapter 2, Problem 4PE
Program Plan Intro

Primary Key:

  • A primary key is a special column of a relation used for uniquely identifying a relation.
  • The primary key can be one column or combination of columns. The primary key will uniquely identify all the records of a table.
  • The features of a primary are:
    • The primary key contains a unique value for each row of data.
    • The primary key column cannot contain null values.

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Need help answering these questions!1. Design a While loop that lets the user enter a number. The number should be multiplied by 10, and the result stored in a variable named product. The loop should iterate as long as the product contains a value less than 100.   2. Design a For loop that displays the following set of numbers: 0, 10, 20, 30, 40, 50 . . . 1000   3. Convert the While loop in the following code to a Do-While loop:     Declare Integer x = 1     While x > 0        Display "Enter a number."        Input x     End While
Need help with these:Design a While loop that lets the user enter a number. The number should be multiplied by 10, and the result stored in a variable named product. The loop should iterate as long as the product contains a value less than 100.   2. Design a For loop that displays the following set of numbers: 0, 10, 20, 30, 40, 50 . . . 1000   3. Convert the While loop in the following code to a Do-While loop:     Declare Integer x = 1     While x > 0        Display "Enter a number."        Input x     End While
Convert the While loop in the following code to a Do-While loop:    Declare Integer x = 1    While x > 0       Display "Enter a number."       Input x    End While
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