(a) All strings with exactly one a. (b) All strings with at least one a. (c) All strings with no more than three a's. (d) All strings with at least three a's. (e) All strings with at most one b. (f) All strings with at least two b. (g) All strings with no more than two substring ab's. (h) All strings starting with a and ending with b. (i) All strings having aba or bab. (j) All strings having the second last symbol is a.

(a) All strings with exactly one a. (b) All strings with at least one a. (c) All strings with no more than three a's. (d) All strings with at least three a's. (e) All strings with at most one b. (f) All strings with at least two b. (g) All strings with no more than two substring ab's. (h) All strings starting with a and ending with b. (i) All strings having aba or bab. (j) All strings having the second last symbol is a.

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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