Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 2, Problem 2.15RQ
Explanation of Solution
Surrogate primary key:
- A system assigned primary key in a relational
database such as a serial number or any other which is not derived from any data in the database is known as surrogate primary key. - It is deputy of the primary key and will act as a primary key in the database and does not have any other significance.
- To simplify the primary key structures in the database, surrogate primary keys are created, and this ensures unique identification process in a relation.
Conditions to use the surrogate key:
The surrogate key for a relation is created when a primary key of a relation holds the below three conditions:
- If the relation has a composite primary key, then surrogate key should be created...
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Hello, please solve this trying to follow this criteria. (use Keil)
Abstract describing the requirements and goals of the assignment.
List file with no errors or warnings.
Brief description of your implementation design and code.
Debugging screen shots for different scenarios with your reference and comments.
Conclusion
Write the following in C# WinForms. Implement a function in the main menu that makes the poacher move to random direction. The movement should seem seamless. The poacher can be drew by the following in the main menu.
e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize);
Create the appropriate poacher class as well
Write the following in C# WinForms. Implement a function in the main menu that makes the poacher move to random direction. The movement should seem seamless. The poacher can be drew by the following in the main menu.
e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize);
Chapter 2 Solutions
Database Concepts (7th Edition)
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Prob. 2.13RQCh. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Prob. 2.40E
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
- Write the following in C# WinForms. Implement a function in the main menu that makes the poacher move to random directions. The movement should seem seamless. The poacher can be drew by the following in the main menu. e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize);arrow_forwardWrite the following in C# WinForms. Create a poacher class that has random x and y values when created, private set function for x and y values. Implement a function in the main menu that makes the poacher move into random direction. The movement should seem seamless. The poacher can be drew by the following in the main menu. e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize); Write the following in C# WinForms. Create a poacher class that has random x and y values when created, private set function for x and y values. Implement a function in the main menu that makes the poacher move into random direction. The movement should seem seamless. The poacher can be drew by the following in the main menu. e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize);arrow_forwardWrite the following in C# WinForms. Create a poacher class that has random x and y values when created, private set function for x and y values. Implement a function in the main menu that makes the poacher move into random direction. The movement should seem seamless. The poacher can be drew by the following in the main menu. e.Graphics.DrawImage(poacherImage, poacher.X, poacherY, tileSize, tileSize);arrow_forward
- Write the following in C# WinForms. Create a poacher class that has random x and y values when created, private set function for x and y values. Implement a function in the main menu that makes the poacher move into random direction. The movement should seem seamless. The picture of the poacher is drew by e.Graphics.DrawImage(poacherImage, poacher.X, poacher.Y, tileSize, tileSize);arrow_forwardCreate a poacher class that has random x and y values when created, private set function for x and y values, and implement a function in the main menu that makes the poacher move into random direction. The movement should seem seamless. Write it in C# WinFormsarrow_forwardHi, please solve this trying to follow this criteria. (use Keil) Abstract describing the requirements and goals of the assignment. List file with no errors or warnings. Brief description of your implementation design and code. Debugging screen shots for different scenarios with your reference and comments. Conclusionarrow_forward
- Compute a Monte Carlo estimate of 0.8 by sampling from Uniform(0,0.8) and estimate the variance of ⑦.arrow_forwardWrite a C program using embedded assembler with a function to convert a digit (0 – 15) to the corresponding ASCII character representing the value in hexadecimal. For numbers 0 – 9, the output will be the characters '0' – '9', for numbers 10 – 15 the characters 'A' – 'F'. The entire core of the program must be written in symbolic instruction language; arrays may not be used. You may only use C to print the result. Tip: This piece of C program will do the same thing: character = number < 10 ? number + '0' : number + 55; As a basis, you can use this program again , which increments a variable. Just replace the INC instruction with ADD and add a test (CMP) with some conditional jump.arrow_forwardAnswer the question fully and accurately by providing the required files(Java Code, Two output files and written answers to questions 1-3 in a word document)meaning question 1 to 3 also provide correct answers for those questions.(note: this quetion is not graded).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781285196145Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos CoronelPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781305971776Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Enhanced Discovering Computers 2017 (Shelly Cashm...Computer ScienceISBN:9781305657458Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. CampbellPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781305971776
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Enhanced Discovering Computers 2017 (Shelly Cashm...
Computer Science
ISBN:9781305657458
Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Publisher:Cengage Learning