please answer the marked placesTASK 4 AND TASK 5 The tasks below will involve you considering the following sentences:A- All valid usernames contain seven letters and a numberB - All valid passwords must contain at least one non-alphanumeric characterC- All valid combinations contain a valid username and a valid passwordTask 1 - Choose one of the sentences above. Using that sentence explain themeaning of the terms "statement" and "predicate".Task 2- Construct a truth table based on the statements above. It should include|columns for A, B, A,^B, AvB, A^B, C, *CTask 3– Give the English equivalents for each of your column headingsTask 4- Giving explanations, use De Morgan's Law to simplify the following:"(AvB ) v (~A^~B)Task 5- Use a truth table to show that the original statement and your simplifiedversion are equivalent.2.62.72.92.102.8

De Morgan's law states the following ~(A v B) = ~A ^ ~B ~(A ^ B) = ~A v ~B

Answered: Task 4- Giving explanations, use De…

Task 4- Giving explanations, use De Morgan's Law to simplify the following: "(AvB ) v (~A^~B) Task 5- Use a truth table to show that the original statement and your simplif version are equivalent.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.

Question

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please answer the marked places

TASK 4 AND TASK 5

The tasks below will involve you considering the following sentences:
A- All valid usernames contain seven letters and a number
B - All valid passwords must contain at least one non-alphanumeric character
C- All valid combinations contain a valid username and a valid password
Task 1 - Choose one of the sentences above. Using that sentence explain the
meaning of the terms "statement" and "predicate".
Task 2- Construct a truth table based on the statements above. It should include
|columns for A, B, A,^B, AvB, A^B, C, *C
Task 3– Give the English equivalents for each of your column headings
Task 4- Giving explanations, use De Morgan's Law to simplify the following:
"(AvB ) v (~A^~B)
Task 5- Use a truth table to show that the original statement and your simplified
version are equivalent.
2.6
2.7
2.9
2.10
2.8

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