2. Syntax rule: → Semantic rule: .actual_type .actual_type Predicate: .actual_type == . expected_type 3. Syntax rule: → + Semantic rule: .actual_type – .actual_type Predicate: .actual_type == . expected_type 4. Syntax rule: → Semantic rule: .actual_type .actual_type 5. Syntax rule: [2] + [3] Semantic rule: .actual_type [2] .actual_type Predicate: [2] .actual_type == [3] .actual_type 6. Syntax rule: → A |B|C Semantic rule: .actual_type – look-up ( .string) Answer the following questions according to the grammar rules specified. a. Create the parser tree structure for the C = B +C +A sentence. b. Is this a correct sentence according to this grammar?

2. Syntax rule: → Semantic rule: .actual_type .actual_type Predicate: .actual_type == . expected_type 3. Syntax rule: → + Semantic rule: .actual_type – .actual_type Predicate: .actual_type == . expected_type 4. Syntax rule: → Semantic rule: .actual_type .actual_type 5. Syntax rule: [2] + [3] Semantic rule: .actual_type [2] .actual_type Predicate: [2] .actual_type == [3] .actual_type 6. Syntax rule: → A |B|C Semantic rule: .actual_type – look-up ( .string) Answer the following questions according to the grammar rules specified. a. Create the parser tree structure for the C = B +C +A sentence. b. Is this a correct sentence according to this grammar?

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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