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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6. 10. Using the grammar of Example 3.2 (pictured), draw a parse tree of these statements: EXAMPLE 3.2 A Grammar for Simple Assignment Statements <assign> → <id> <expr> <id> → A| B|C <expr><id> + <expr> |<id> * <expr> a) B= C✶ (A* C + B) b) A A (B+ (C)) c) C B + A*C | ( <expr>) | <id> Describe in English, the language defined by the following grammar: <S> → <A> <B> <C> <A> a <A> | a <B> → b <B> | b <C> > c <C> | C 12. Consider the following grammar: <S> a <S> c <B> | <A> | b |ε <A><A> | C <B>→d | <A> Which of the following sentences are in the language generated by this grammar? a) abcd b) acccbd c) acccbcc d) acd e) accc
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Transcribed Image Text:6. 10. Using the grammar of Example 3.2 (pictured), draw a parse tree of these statements: EXAMPLE 3.2 A Grammar for Simple Assignment Statements <assign> → <id> <expr> <id> → A| B|C <expr><id> + <expr> |<id> * <expr> a) B= C✶ (A* C + B) b) A A (B+ (C)) c) C B + A*C | ( <expr>) | <id> Describe in English, the language defined by the following grammar: <S> → <A> <B> <C> <A> a <A> | a <B> → b <B> | b <C> > c <C> | C 12. Consider the following grammar: <S> a <S> c <B> | <A> | b |ε <A><A> | C <B>→d | <A> Which of the following sentences are in the language generated by this grammar? a) abcd b) acccbd c) acccbcc d) acd e) accc
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