brackets are used to denote an optional construct. For example, A → B[C]D says that an A can be replaced by a Band a D, with an optional C between them. This notation does not allow us to describe anything but context-freelanguages, since an extended production can always be replaced by several conventional productions.Suppose a grammar has the extended productions:A - B[CDE]FGH | BCD[EFG]HConvert this pair of extended productions to conventional productions. Identify, from the list below, theconventional productions that are equivalent to the extended productions above.A - BA1HA1 - CDE | EFG | EOA - BA1FGH | BCDA2HA1 - CDEA2- EFGA - BA1HA1 - CDE| EFGA - BA1 FGH | BCDA2HA1 - CDE | EA2 - EFG | EA - BCDEFGH | BH

Given that [C] is optional. So, Basing on this , answer is as follows.

Answered: Convert this pair of extended…

Convert this pair of extended productions to conventional productions. Identify, from the list below, the conventional productions that are equivalent to the extended productions above.

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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Question

brackets are used to denote an optional construct. For example, A → B[C]D says that an A can be replaced by a B
and a D, with an optional C between them. This notation does not allow us to describe anything but context-free
languages, since an extended production can always be replaced by several conventional productions.
Suppose a grammar has the extended productions:
A - B[CDE]FGH | BCD[EFG]H
Convert this pair of extended productions to conventional productions. Identify, from the list below, the
conventional productions that are equivalent to the extended productions above.
A - BA1H
A1 - CDE | EFG | E
OA - BA1FGH | BCDA2H
A1 - CDE
A2
- EFG
A - BA1H
A1 - CDE| EFG
A - BA1 FGH | BCDA2H
A1 - CDE | E
A2 - EFG | E
A - BCDEFGH | BH

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