MODERN DATABASE MGMT.(PEARSON CHANNEL)
13th Edition
ISBN: 9780136709299
Author: Hoffer
Publisher: PEARSON
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Chapter 1, Problem 1.45PAE
Consider the project data model shown in Figure 1-16
- Create a textual description of the diagrammatic representation shown in the figure. Ensure that the description captures the rules/constraints conveyed by the model.
- In arriving at the requirements document, what aspect of the diagram did you find was the most difficult to describe? Which parts of the requirements do you still consider to be a little ambiguous? In your opinion, what is the underlying reason for this ambiguity?
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Students have asked these similar questions
Given the C++ code below, create a TM that performs the same operation, i.e., given an input
over the alphabet Σ= {a, b} it prints the number of letters b in binary.
1 #include
2 #include
3
4- int main() {
std::cout > str;
for (char c : str) {
if (c == 'b')
count++;
5
std::string str;
6
int count = 0;
7
char buffer [1000];
8
9
10
11-
12
13
14
}
15
16-
17
18
19
}
20
21
22}
std::string binary
while (count > 0) {
binary = std::to_string(count % 2) + binary;
count /= 2;
std::cout << binary << std::endl;
return 0;
Considering the CFG described below, answer the following questions.
Σ = {a, b}
• NT = {S}
Productions:
P1 S⇒aSa
P2
P3
SbSb
S⇒ a
P4 S⇒ b
A. List one sequence of productions that can accept the word abaaaba;
B. Give three 5-letter words that can be accepted by this CFG;
C. Create a Pushdown automaton capable of accepting the language accepted by this CFG.
Given the FSA below, answer the following questions.
b
1
3
a
a
b
b
с
2
A. Write a RegEx that is equivalent to this FSA as it is;
B. Write a RegEx that is equivalent to this FSA removing the states and edges
corresponding to the letter c.
Note: To both items feel free to use any method you want, including analyzing which words are
accepted by the FSA, to generate your RegEx.
Chapter 1 Solutions
MODERN DATABASE MGMT.(PEARSON CHANNEL)
Ch. 1 - Prob. 1.1RQCh. 1 - Prob. 1.2RQCh. 1 - Prob. 1.3RQCh. 1 - Prob. 1.4RQCh. 1 - Prob. 1.5RQCh. 1 - Prob. 1.6RQCh. 1 - Prob. 1.7RQCh. 1 - How are relationships between tables expressed in...Ch. 1 - What does the term data independence mean, and why...Ch. 1 - Prob. 1.10RQ
Ch. 1 - Prob. 1.11RQCh. 1 - Prob. 1.12RQCh. 1 - Prob. 1.13RQCh. 1 - Prob. 1.14RQCh. 1 - Prob. 1.15RQCh. 1 - Prob. 1.16RQCh. 1 - Prob. 1.17RQCh. 1 - Prob. 1.18RQCh. 1 - Prob. 1.19RQCh. 1 - Prob. 1.20RQCh. 1 - Prob. 1.21RQCh. 1 - Prob. 1.22RQCh. 1 - Prob. 1.23RQCh. 1 - Prob. 1.24RQCh. 1 - Prob. 1.25RQCh. 1 - Prob. 1.26RQCh. 1 - Prob. 1.27PAECh. 1 - Prob. 1.28PAECh. 1 - Prob. 1.29PAECh. 1 - Prob. 1.30PAECh. 1 - Prob. 1.31PAECh. 1 - Prob. 1.32PAECh. 1 - Great Lakes Insurance would like to implement a...Ch. 1 - Figure 1-22 shows an enterprise data model for a...Ch. 1 - Prob. 1.35PAECh. 1 - Prob. 1.36PAECh. 1 - Prob. 1.37PAECh. 1 - Prob. 1.38PAECh. 1 - Prob. 1.39PAECh. 1 - Prob. 1.40PAECh. 1 - Prob. 1.41PAECh. 1 - Prob. 1.42PAECh. 1 - Prob. 1.43PAECh. 1 - Prob. 1.44PAECh. 1 - Consider the project data model shown in Figure...Ch. 1 - Answer the following questions concerning Figures...Ch. 1 - Prob. 1.47PAECh. 1 - Helen Jarvis wants to determine the most important...Ch. 1 - In this chapter, we described four important data...
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- 3) Finite State Automata Given the FSA below, answer the following questions. a b a b 0 1 2 b b 3 A. Give three 4-letter words that can be accepted by this FSA; B. Give three 4-letter words that cannot be accepted by this FSA; C. How could you describe the words accepted by this FSA? D. Is this FSA deterministic or non-deterministic?arrow_forwardConsidering the TM below, answer the following questions. a/x,R €/E,L €/E,R €/E,L x/E,R c/c,R b/E.L c/c,L x/x,R I J K L M F b/E.L D A. Give three 4-letter words that can be accepted by this TM; B. Give three 4-letter words that cannot be accepted by this TM; C. How could you describe the words accepted by this TM? D. What is the alphabet of the language accepted by this TM?arrow_forwardWhat is the generator? Explain motor generator motorarrow_forward
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