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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 2: The following context-free grammar describes part of the syntax of a simple programming language. Non-terminals are given in capitals and terminals in lower case.

VAR represents a variable name and CONST represents a constant. The productions for

ASSN-STMT are not given, as they do not affect the question.

1 PROGRAM → Procedure STMT-LIST

2 STMT-LIST → STMT STMT-LIST

3 | STMT

4 STMT → do VAR = CONST to CONST { STMT-LIST }

5 | ASSN-STMT

Q) Create attribute(s) and add semantic functions to the above grammar. Write them beside the productions above.

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