Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Expert Solution & Answer
Chapter 8, Problem 10E
Explanation of Solution
Consider the
Redesigning the database into first normal form:
- A relation schema is said to be in First Normal Form (1NF) when the domains of all attributes in the schema are atomic.
- Thus, all the attributes of given schema need to be flattened into a single relation schema to make it into 1NF.
- So, the schema is as follows:
Emp_details= (ename, name, birthday, type, year, city)
- The functional dependencies and multi-level dependencies are as follows:
- ename, name -> birthday
- A child has a unique birth date.
- Ename -> name, birthday
- An employee cannot have two children of the same name.
- ename, type -> year, city
- No relationship exists between the children of an employee and his skill set details...
- ename, name -> birthday
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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
Chapter 8 Solutions
Database System Concepts
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