Question 3) a) Define a Context-Free Grammar (CFG) formally and in general. Explain in detail. b) Give Context-Free Grammars that generate the following languages. Let Σ={a, b}. 1. L=(1+0)*000 2. L={w E {a, b}* and w contains at least three a's }

Question 3) a) Define a Context-Free Grammar (CFG) formally and in general. Explain in detail. b) Give Context-Free Grammars that generate the following languages. Let Σ={a, b}. 1. L=(1+0)000 2. L={w E {a, b} and w contains at least three a's }

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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