In a programming language (Pascal), the declaration of a node in a singly linke list is shown in Figure P6.7(a). The list referred to for the problem is shown in Figure P6.7(b). Given P to be a pointer to a node, the instructions DATA(P) and LINK(P) referring to the DATA and LINK fields, respectively, of node P an equivalently represented by P↑. DATA and P↑. LINK in the programming language What do the following commands do to the logical representation of the list T? TYPE POINTER NODE; NODE RECORD END; VAR P, Q R: T POINTER (a) Declaration of a node in a singly linked list T 31 DATA: integer; LINK: POINTER i) ii) Q = P iii) R₁.LINK: = Q iv) R₁.DATA: = 57 P₁.DATA: Q₁.DATA + R₁.DATA |R (b) A singly linked list T Figure P6.7. (a and b) Declaration of a node in a programming language and the logical representation of a singly linked list T Q.LINK.DATA + 10 91 Linked Lists 18

In a programming language (Pascal), the declaration of a node in a singly linke list is shown in Figure P6.7(a). The list referred to for the problem is shown in Figure P6.7(b). Given P to be a pointer to a node, the instructions DATA(P) and LINK(P) referring to the DATA and LINK fields, respectively, of node P an equivalently represented by P↑. DATA and P↑. LINK in the programming language What do the following commands do to the logical representation of the list T? TYPE POINTER NODE; NODE RECORD END; VAR P, Q R: T POINTER (a) Declaration of a node in a singly linked list T 31 DATA: integer; LINK: POINTER i) ii) Q = P iii) R₁.LINK: = Q iv) R₁.DATA: = 57 P₁.DATA: Q₁.DATA + R₁.DATA |R (b) A singly linked list T Figure P6.7. (a and b) Declaration of a node in a programming language and the logical representation of a singly linked list T Q.LINK.DATA + 10 91 Linked Lists 18

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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