Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 1, Problem 1RQ
Explanation of Solution
Purpose of an E-R model:
- Entity-Relationship Model (ERM) is used as a high-level logical data model depicted in the form of picture and it contains the information about the business system.
- The information can be created and stored in the form of ERM diagram.
- It is used to identify the individual information and the way they are interrelated in the business system.
- The main purpose of E-R model is to identify the entities about which the
database should store data and the relationships among those entities.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
1) Apply the Paint Blue algorithm discussed in class to the following Finite Automata.
a
a
a
b
b
a
COIS-3050H-R-W01-2025WI-COMB Formal
Languages & Automata
a
b
Show the status of the Finite Automata at the conclusion of the Paint Blue Algorithm (mark the
visited states with an X and only include edges that have not been followed).
2) Use the pumping lemma to prove the following language is nonregular:
L= {ab} = {abbb, aabbbbbb, aaabbbbbbbbb, ...}
3) Find CFGs that for these regular languages over the alphabet Σ= {a, b}. Draw a Finite Automata
e CFG.
1
COIS-3050H-R-W01-2025WI-COMB Formal
anguages & Automata
Is that contain the substring aba.
(b) The language of all words that have an odd number letters and contains the string bb.
(c) The language of all words that begin with the substring ba and contains an odd number of
letters.
4) Convert the following FA into a PDA.
a
a
S±
b
a
a
Ν
Ꮓ
COIS-3050H-R-W01-2025WI-COMB Formal ministic PDA. Are the following words accepted by this
Languages & Automata
UI MIUSɩ that aTU I
ed, indicate which state the PDA is in when the crash occurs.
(a) aabbaa
(b) aaabab
(c) bababa
Start
(d) aaaabb
A
Accept
Read₁
Push a
(e) aaaaaa
a
b
Read,
Popi
a
a,b
A
Read₂
Accept
A
Pop₂
Chapter 1 Solutions
Oracle 12c: SQL
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MCCh. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MCCh. 1 - Prob. 13MCCh. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MCCh. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOACh. 1 - Prob. 3HOACh. 1 - Prob. 4HOACh. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOACh. 1 - Prob. 7HOACh. 1 - Prob. 8HOACh. 1 - Prob. 9HOACh. 1 - Prob. 10HOA
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- 5) Eliminate the A-productions from the following CFG: Abc COIS-3050H-R-W01-2025WI-COMB Formal Languages & Automata BAabC C CaA | Bc | A 6) Convert the following CFG into CNF. S→ XYZ XaXbS | a |A YSbS | X | bb Z→ barrow_forwardNeed help answering these questions!1. Design a While loop that lets the user enter a number. The number should be multiplied by 10, and the result stored in a variable named product. The loop should iterate as long as the product contains a value less than 100. 2. Design a For loop that displays the following set of numbers: 0, 10, 20, 30, 40, 50 . . . 1000 3. Convert the While loop in the following code to a Do-While loop: Declare Integer x = 1 While x > 0 Display "Enter a number." Input x End Whilearrow_forwardNeed help with these:Design a While loop that lets the user enter a number. The number should be multiplied by 10, and the result stored in a variable named product. The loop should iterate as long as the product contains a value less than 100. 2. Design a For loop that displays the following set of numbers: 0, 10, 20, 30, 40, 50 . . . 1000 3. Convert the While loop in the following code to a Do-While loop: Declare Integer x = 1 While x > 0 Display "Enter a number." Input x End Whilearrow_forward
- Convert the While loop in the following code to a Do-While loop: Declare Integer x = 1 While x > 0 Display "Enter a number." Input x End Whilearrow_forwardPython - need help creating a python program that will sum the digits of a number entered by the user. For example if the user inputs the value 243 the program will output 9 because 2 + 4 + 3 = 9. The program should ask for a single integer from the user, it should then calculate the sum of all the digits of that number and output the result.arrow_forwardI need help with this in Python (with flowchart): Im creating a reverse guessing game. Then to choose a random number from 1 to 100 and the computer program will attempt to guess it, displaying the directions calculated or not. The guess will be displayed and the user will answer if it was correct or not. If correct, the game ends, if not then the computer asks if the guess was too high or too low. Finally inputting an answer and the computer generates a new guess within the proper range. Oh and to make sure the program doesnt guess outside of the ranges produced by the inputs of “too high” and “too low”. The program ending when the user guesses correctly or after the program takes 6 guesses. HELP ASAP!arrow_forward
- I need help with this in Python (with flowchart): Im creating a reverse guessing game. Then to choose a random number from 1 to 100 and the computer program will attempt to guess it, displaying the directions calculated or not. The guess will be displayed and the user will answer if it was correct or not. If correct, the game ends, if not then the computer asks if the guess was too high or too low. Finally inputting an answer and the computer generates a new guess within the proper range. Oh and to make sure the program doesnt guess outside of the ranges produced by the inputs of “too high” and “too low”. The program ending when the user guesses correctly or after the program takes 6 guesses. HELP ASAP!arrow_forwardNeed help finding errors in my pseudocode (Two)! Declare Boolean finished = False Declare Integer value, cube While NOT finished Display "Enter a value to be cubed." Input value; Set cube = value^3 Display value, " cubed is ", cube End While Next, I intended the following pseudocode to display the numbers 1 through 60, and then display the message "Time’s up!". Doesnt work and has error. Declare Integer counter = 1 Const Integer TIME_LIMIT = 60 While counter < TIME_LIMIT Display counter Set counter = counter + 1 End While Display "Time's up!"arrow_forwardHaving error in pseudcode; wanting to get five sets of two numbers each, calculate the sum of each set, and calculate the sum of all the numbers entered. Not functioning as intended and can't find the error.Code: // This program calculates the sum of five sets of two numbers. Declare Integer number, sum, total Declare Integer sets, numbers Constant Integer MAX_SETS = 5 Constant Integer MAX_NUMBERS = 2 Set sum = 0; Set total = 0; For sets = 1 To MAX_NUMBERS For numbers = 1 To MAX_SETS Display "Enter number ", numbers, " of set ", sets, "." Input number; Set sum = sum + number End For Display "The sum of set ", sets, " is ", sum "." Set total = total + sum Set sum = 0 End For Display "The total of all the sets is ", total, "."arrow_forward
- Need help converting loops!1. Convert the following While loop to a For loop: Declare Integer count = 0 While count < 50 Display "The count is ", count Set count = count + 1 End While _________________________________________________ 2. Convert the following For loop to a While loop: Declare Integer count For count = 1 To 50 Display count End Forarrow_forwardNeed help making this!1.Design a nested loop that displays 10 rows of # characters. There should be 15 # characters in each row. 2. Design a nested set of for loops that displays the following arrangements of ‘X’ characters X XX XXX XXXX XXXXX XXXXXXarrow_forwardI need help to resolve the case, thank youarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Management Of Information SecurityComputer ScienceISBN:9781337405713Author:WHITMAN, Michael.Publisher:Cengage Learning,
Fundamentals of Information SystemsComputer ScienceISBN:9781305082168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Management Of Information Security
Computer Science
ISBN:9781337405713
Author:WHITMAN, Michael.
Publisher:Cengage Learning,
Fundamentals of Information Systems
Computer Science
ISBN:9781305082168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning