Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
(c) Write the paths representing parsing of the following input by the automaton
depicted below. State if the input is accepted or rejected.
i. abaa
ii. abbab
iii. babab
iv. baaba
A
a
b
a
b
B
C
b
a
b
a
D
E
b
a
(d) What is the language of the automaton from the previous question?
(e) Give a finite automaton that accepts all binary words that do not contain
101.
(f) Give two strings that can, and two that cannot be generated from:
b* ab* Ua*ba*
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Transcribed Image Text:(c) Write the paths representing parsing of the following input by the automaton depicted below. State if the input is accepted or rejected. i. abaa ii. abbab iii. babab iv. baaba A a b a b B C b a b a D E b a (d) What is the language of the automaton from the previous question? (e) Give a finite automaton that accepts all binary words that do not contain 101. (f) Give two strings that can, and two that cannot be generated from: b* ab* Ua*ba*
Expert Solution
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Step 1: Stating the questions:

As per our guidelines, we are supposed to answer one question and if subparts are available then 3 subparts. I have answered all the 4 subparts of the question (c).

I have uploaded images for the subparts solution and have explained the step-wise solution just like asked in the question. I hope the solution helps you.

Let's understand a few basics first: 

  • We always start with the start state, in this DFA, the start state is state A.
  • Final states are represented using a double circle, in this DFA we have 3 final states- A, B,C
  • After traversing a string if at the end we land at one of the final states then the string is accepted.
  • If we land at one of the non-final states at the end then the string is not-accepted by DFA.
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