Create a function that will test if a string is a valid PIN or not via a regular expression. A valid PIN has: • Exactly 4 or 6 characters. • Only numeric characters (0-9). • No whitespace. Examples validate("121317") validate("1234") → true validate("45135") validate("89abc1") → false. validate("900876") → true validate(" 4983") → false → true false

Create a function that will test if a string is a valid PIN or not via a regular expression. A valid PIN has: • Exactly 4 or 6 characters. • Only numeric characters (0-9). • No whitespace. Examples validate("121317") validate("1234") → true validate("45135") validate("89abc1") → false. validate("900876") → true validate(" 4983") → false → true false

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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