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Given an alphabet E, the language of all strings that can be made using symbols in E is called E. The language ' can be represented by a finite-state machine, and E* is a regular language.

Given an alphabet E, the language of all strings that can be made using symbols in E is called E. The language ' can be represented by a finite-state machine, and E* is a regular language.

Database System Concepts
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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Given an alphabet E, the language of all strings that can be made using symbols in E is called E*. The language E' can be represented by a finite-state machine, and E' is a regular language. O True False
Transcribed Image Text:Given an alphabet E, the language of all strings that can be made using symbols in E is called E*. The language E' can be represented by a finite-state machine, and E' is a regular language. O True False
Consider the Chomsky hierarchy of formal languages, shown below and discussed in class. Chomsky Hierarchy recursively enumerable context-sensitive context-free regular The ovals represent sets. The innermost set is the set of regular languages. Which of these is true of the types of formal language shown above? O Some but not all regular languages are context-free languages. Some but not all regular languages can be represented by finite-state automata. Some but not all context-free languages can be represented by finite-state automata. A language cannot be both a regular language and a context-free language.
Transcribed Image Text:Consider the Chomsky hierarchy of formal languages, shown below and discussed in class. Chomsky Hierarchy recursively enumerable context-sensitive context-free regular The ovals represent sets. The innermost set is the set of regular languages. Which of these is true of the types of formal language shown above? O Some but not all regular languages are context-free languages. Some but not all regular languages can be represented by finite-state automata. Some but not all context-free languages can be represented by finite-state automata. A language cannot be both a regular language and a context-free language.
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