A database of Prolog facts for a group of people contains the following two types of facts: name([, , ...]). female(, , ...]). E.g., male([alex, tom, vic, ...]). E.g., female([ann, sara, ella, ...]). E.g. age(ann, 66). age(, ) For these facts write the following rules (you may use Prolog library functions): Find the name and the age of a person person(, ). countF(). gender(, gender>). youngest(, ,). meanAge(). Find the number of female in the database Find the name and the gender (male or female) Find the name/age/gender of the youngest person Find the mean age of all people in the database
A database of Prolog facts for a group of people contains the following two types of facts: name([, , ...]). female(, , ...]). E.g., male([alex, tom, vic, ...]). E.g., female([ann, sara, ella, ...]). E.g. age(ann, 66). age(, ) For these facts write the following rules (you may use Prolog library functions): Find the name and the age of a person person(, ). countF(). gender(, gender>). youngest(, ,). meanAge(). Find the number of female in the database Find the name and the gender (male or female) Find the name/age/gender of the youngest person Find the mean age of all people in the database
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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![A database of Prolog facts for a group of people contains the following two types of facts:
name([<name>, <name>, ...]).
female([<name>, <name>, ...]).
E.g., male([alex, tom, vic, ...]).
E.g., female([ann, sara, ella, ...]).
E.g. age(ann, 66).
age(<name>, <years>)
For these facts write the following rules (you may use Prolog library functions):
Find the name and the age of a person
person(<name>, <age>).
countF(<number>).
Find the number of female in the database
Find the name and the gender (male or female)
Find the name/age/gender of the youngest person
Find the mean age of all people in the database
gender(<name>, gender>).
youngest(<name>, <age>,<gender>).
meanAge(<mean age>).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F11ad9986-04b0-4336-8340-a3038312afe8%2F93da231d-0317-4448-8c49-5c0b70e85728%2F6qb9bc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A database of Prolog facts for a group of people contains the following two types of facts:
name([<name>, <name>, ...]).
female([<name>, <name>, ...]).
E.g., male([alex, tom, vic, ...]).
E.g., female([ann, sara, ella, ...]).
E.g. age(ann, 66).
age(<name>, <years>)
For these facts write the following rules (you may use Prolog library functions):
Find the name and the age of a person
person(<name>, <age>).
countF(<number>).
Find the number of female in the database
Find the name and the gender (male or female)
Find the name/age/gender of the youngest person
Find the mean age of all people in the database
gender(<name>, gender>).
youngest(<name>, <age>,<gender>).
meanAge(<mean age>).
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