DATABASE CONCEPTS+MYITLAB
18th Edition
ISBN: 9780134821245
Author: KROENKE
Publisher: PEARSON C
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
Please original work
Background information: Imagine you are a consultant for a fictional company, FutureTech Innovations, which specializes in advanced technology products. The company is interested in improving its decision-making processes by leveraging Business Analytics (BA) and Management Support Systems (MSS).
Talk about how Online Analytical Processing (OLAP) could be used to analyze data from multiple perspectives at FutureTech. What dimensions (e.g., time, product, region) would be important, and how would OLAP enhance decision-making?
Talk about the role of data visualization in helping FutureTech understand business performance. What types of visualizations (e.g., dashboards, charts) would be useful, and how would they assist in interpreting data?
Please cite in text references and add weblinks
Design a synchronous Up/Down counter to produce the following sequence
(4
9
2,0,7,6,3,1,5) using T flip-flop. The counter should count
up when Up/Down =1, and down when Up/Down = 0.
An active-HIGH pulse (HIGH level when asse rted, LOW level when not) is required on an i nverter input.(a) Draw the appropriate logic symbol, using t he distinctive shape and the negation indicat or, for the inverter in this application.(b) Describe the output when a positive-goin g pulse is applied to the input of an inverter.
Chapter 2 Solutions
DATABASE CONCEPTS+MYITLAB
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 - Define the terms candidate key and primary key....Ch. 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 - Apply the normalization process to the Veterinary...
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
- Convert this question to Subroutines ORG 100 LDA A1 STA T1 LDA B1 STA T2 LDA T1 I STA A1 I ISZ B1 ISZ A1 ISZ ENC BUN L2 //COMPUTER HLT L1, INC A1, HEX 5000 STA T2 1 B1, HEX 6000 ISZ T1 T1, HEX O ISZ T2 T2, HEX 0 ISZ DCD DCD, DEC -8 BUN L1 // DPNQVUFS ENC, DEC -8 LDA B1 I DEC, HEX FF L2, ADD DEC ENDarrow_forwardConvert this question to Subroutines > F = [(A. B) + (A'. B')]” = [(A. B)'. (A'. B')']' ORG 100 LDA A // Load A operand to AC HLT // END Program AND B CMA STA T1 LDA A CMA STA T2 LDA B CMA AND T2 CMA // Store AC result in T1 // Load A operand to AC // Complement result in AC // Store AC [A'] result in T2 // Load B operand to AC // Complement result in AC // AND B' with T2[A'] operand // Complement result in AC AND T1 // AND [(A'.B')'] with T1[(A.B)'] CMA // Complement result in AC STA F // Store AC result in F // AND A operand with B operand B, HEX 01 // Complement result in AC A, HEX 01 T1, HEX O T2, HEX 0 F, HEX 0 ENDarrow_forwardConvert this question to Subroutines L1, L2, ORG 100 SKI BUN L1 INP OUT STA CTR CLA // Check input operation ready // Loop back to L1 location // Enter counter (-10) to AC // display counter operand // Store counter in CTR // Clear AC STA LOCI // Clear content of location LOC ISZ LOC ISZ CTR BUN L2 // Go to next Address // Check loop duration // Loop back to L2 location // End program HLT CTR, HEX 0 LOC, HEX 0150 ENDarrow_forward
- Design the following Digital circuit in Verilog. IN1 IN2 MUX A Hint: a typical Demultiplexer is defined by a truth table like the following B DEMUX 1t04 demux_1t04 Sel W X Y Z "00" A 000 "01" 0 A 00 Sel sel demux_sel[1:0] "11" "10" 0 0 AO 000Aarrow_forwardhow do I do this in quartus with picture examples pleasearrow_forwardI need help with this problem and an step by step explanation of the solution from the image described below. (Introduction to Signals and Systems)arrow_forward
- x³dx+y³dy=0arrow_forwardI need help with this problem and an step by step explanation of the solution from the image described below. (Introduction to Signals and Systems)arrow_forwardImplement the code in MATLAB and send a picture of the implementation from within the program MATLAB code to analyze material shape % image = grayImage == using computer vision imread('material_image.jpg'); % Read the image rgb2gray(image); % Convert the image to grayscale BW = imbinarize(grayImage); % Convert the image to binary (black and white) Extract geometric properties (e.g., area % and bounding box) stats = regionprops (BW, 'Area', ; 'BoundingBox') Classify material based on shape % if stats. Area > 500 ; 'material = 'Plastic ; 'material = 'Wood else end ; disp(['The material is: ', material])arrow_forward
- Implement the code In MATLAB and send a picture of the Implementation from within the program Simulate data from magnetic sensor % magnetic FieldStrength = 0.5; % Magnetic field strength in Tesla Classify materials based on magnetic % field strength if magnetic FieldStrength > 0.3 material = 'Metal'; % Detect metal (e.g., iron) else material = 'Non-metal'; % Non-metal materials end ; disp(['Detected material: ', material])arrow_forwardImplement the code In MATLAB and send a picture of the Implementation from within the program Simulate infrared absorbance values % IR Absorbance = 0.75; % Infrared absorbance of the material Classify material based on infrared % absorbance if IR Absorbance > 0.7 material = 'Plastic'; % Plastic absorbs more IR material = 'Other'; % Other materials else like wood or metal end ;disp(['Material detected: ', material])arrow_forwardImplement the code In MATLAB and send a picture of the Implementation from within the program MATLAB code to detect magnetic materials % Assume we have a reading from a magnetic % sensor magnetic field = 0.8; % Magnetic field strength in Tesla If the material is magnetic (like iron), % there will be a higher reading if magnetic field > 0.5 'material = 'Magnetic (Metal) material = 'Non-Magnetic (Plastic/ else ; 'Wood) end ;disp(['The material is: ', material])arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning
Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage Learning
Prelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson Education
Sc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY