DATABASE CONCEPTS+MYITLAB
DATABASE CONCEPTS+MYITLAB
18th Edition
ISBN: 9780134821245
Author: KROENKE
Publisher: PEARSON C
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Chapter 4, Problem 4.25RQ

Explanation of Solution

Recursive relationship:

An entity which calls by itself more than once in different roles with a relationship are termed as a recursive relationship.

Example:

Consider the “Employee” can be in post of “Manager” and a “Manager” can manage an employee. So, “Manages” is relationship with “Employee” entity in recursive manner.

E-R diagram for the above example:

The following “E-R diagram” demonstrates an employee has a manager and the manager manages many employees.

Explanation:

Employee entity “1:M” relationship with “Manages” relationship which means an employee can be in the post of manager and a manager can manage many employees...

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I need help to solve a simple problem using Grover’s algorithm, where the solution is not necessarily known beforehand. The problem is a 2×2 binary sudoku with two rules: • No column may contain the same value twice. • No row may contain the same value twice.   Each square in the sudoku is assigned to a variable as follows:   We want to design a quantum circuit that outputs a valid solution to this sudoku. While using Grover’s algorithm for this task is not necessarily practical, the goal is to demonstrate how classical decision problems can be converted into oracles for Grover’s algorithm.   Turning the Problem into a Circuit   To solve this, an oracle needs to be created that helps identify valid solutions. The first step is to construct a classical function within a quantum circuit that checks whether a given state satisfies the sudoku rules.   Since we need to check both columns and rows, there are four conditions to verify: v0 ≠ v1   # Check top row   v2 ≠ v3   # Check bottom row…
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