Enhanced Discovering Computers, Fundamentals: Your Interactive Guide To The Digital World, 2013 Edition (shelly Cashman)
1st Edition
ISBN: 9781133596448
Author: Misty E. Vermaat
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Expert Solution & Answer
Chapter 11, Problem 7SG
Explanation of Solution
Validation:
Validation is done for comparing data with certain rules to find whether the data meets some criteria.
- It is a process for checking the data whether it make some meaning or not.
- Many programs perform validation at the time of entering the data or on entered data.
- Assume that, there is an admission of new student...
Explanation of Solution
Type of validity checks:
Alphabetic/Numeric Check:
- Alphabetic check ensures the user enters only alphabetic values to the field. For example, in the field of First Name user should only enter the alphabetic character only.
- Numeric checks ensure that user enters only numeric values to the field. For example, in the field of Current Enrollment, user can enter only integer values.
Range check:
- Range check ensures that the user enters a value is within a specified range. For example, assume that the lowest per credit hour fee at the school is $75.00 and the highest is $370.75.
- A range check ensures whether the credit hour fee field value is between $75.00 and $370.75.
Consistency check:
- A consistency check will test the data in one field or two or more fields to ensure that the relationship is logically correct and their data format is correct.
- In this check, it will concentrate to maintain the physical and logical consistency of
database . - For example, the field date of admission of a student in particular institution cannot be earlier in time than the value in student’s date of birth field...
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
I would like to get help to resolve the following case
Last Chance Securities
The IT director opened the department staff meeting today by saying, "I've got some good news and
some bad news. The good news is that management approved the payroll system project this morning.
The new system will reduce clerical time and errors, improve morale in the payroll department, and avoid
possible fines and penalties for noncompliance. The bad news is that the system must be installed by
January 1st in order to meet new federal reporting rules, all expenses from now on must be approved in
advance, the system should have a modular design if possible, and the vice president of finance would
like to announce the new system in a year-end report if it is ready by mid-December."
Tasks
1. Why is it important to define the project scope? How would you define the scope of the payroll
project in this case?
2. Review each constraint and identify its characteristics: present versus future, internal versus exter-
nal, and mandatory versus desirable.
3. What…
2. Signed Integers
Unsigned binary numbers work for natural numbers, but many calculations use negative
numbers as well. To deal with this, a number of different methods have been used to represent
signed numbers, but we will focus on two's complement, as it is the standard solution for
representing signed integers.
2.1 Two's complement
• Most significant bit has a negative value, all others are positive. So, the value of an n-digit
-2
two's complement number can be written as: Σ2 2¹ di 2n-1 dn
• Otherwise exactly the same as unsigned integers.
i=0
-
• A neat trick for flipping the sign of a two's complement number: flip all the bits (0 becomes 1,
or 1 becomes 0) and then add 1 to the least significant bit.
• Addition is exactly the same as with an unsigned number.
2.2 Exercises
For questions 1-3, answer each one for the case of a two's complement number and an
unsigned number, indicating if it cannot be answered with a specific representation.
1. (15 pts) What is the largest integer…
Chapter 11 Solutions
Enhanced Discovering Computers, Fundamentals: Your Interactive Guide To The Digital World, 2013 Edition (shelly Cashman)
Ch. 11 - Define the terms, database and database software....Ch. 11 - Prob. 2SGCh. 11 - Prob. 3SGCh. 11 - Prob. 4SGCh. 11 - Prob. 5SGCh. 11 - Explain how a DBMS might manage deleted or...Ch. 11 - Prob. 7SGCh. 11 - Prob. 8SGCh. 11 - Prob. 9SGCh. 11 - Prob. 10SG
Ch. 11 - Prob. 11SGCh. 11 - Prob. 12SGCh. 11 - Prob. 13SGCh. 11 - Prob. 14SGCh. 11 - Prob. 15SGCh. 11 - Prob. 16SGCh. 11 - Prob. 17SGCh. 11 - A(n) _____ is a request for specific information...Ch. 11 - Prob. 19SGCh. 11 - Prob. 20SGCh. 11 - Prob. 21SGCh. 11 - Prob. 22SGCh. 11 - Prob. 23SGCh. 11 - Prob. 24SGCh. 11 - Prob. 25SGCh. 11 - Prob. 26SGCh. 11 - Prob. 27SGCh. 11 - Prob. 28SGCh. 11 - Prob. 29SGCh. 11 - Prob. 30SGCh. 11 - Prob. 31SGCh. 11 - Prob. 32SGCh. 11 - Prob. 33SGCh. 11 - Prob. 34SGCh. 11 - Prob. 35SGCh. 11 - Prob. 36SGCh. 11 - Prob. 37SGCh. 11 - Prob. 38SGCh. 11 - Prob. 39SGCh. 11 - Prob. 40SGCh. 11 - Prob. 41SGCh. 11 - Prob. 42SGCh. 11 - Prob. 43SGCh. 11 - Define the following terms: programming language,...Ch. 11 - Prob. 45SGCh. 11 - Define the terms, procedural language, compiler,...Ch. 11 - Prob. 47SGCh. 11 - Prob. 48SGCh. 11 - Prob. 49SGCh. 11 - Prob. 1TFCh. 11 - Prob. 2TFCh. 11 - Prob. 3TFCh. 11 - Prob. 4TFCh. 11 - Prob. 5TFCh. 11 - Prob. 6TFCh. 11 - Prob. 7TFCh. 11 - Prob. 8TFCh. 11 - One way to secure a database is to allow only...Ch. 11 - In a rollforward, the DBMS uses the log to undo...Ch. 11 - Prob. 11TFCh. 11 - Prob. 12TFCh. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Prob. 3MCCh. 11 - Prob. 4MCCh. 11 - Prob. 5MCCh. 11 - Prob. 6MCCh. 11 - _____ feasibility measures whether an organization...Ch. 11 - Prob. 8MCCh. 11 - Prob. 1MCh. 11 - Prob. 2MCh. 11 - Prob. 3MCh. 11 - Prob. 4MCh. 11 - Prob. 5MCh. 11 - Prob. 6MCh. 11 - Prob. 7MCh. 11 - Prob. 8MCh. 11 - Prob. 9MCh. 11 - Prob. 10MCh. 11 - Prob. 2CTCh. 11 - Prob. 3CTCh. 11 - What is function creep?Ch. 11 - Prob. 5CTCh. 11 - Prob. 6CTCh. 11 - Prob. 7CTCh. 11 - Prob. 8CTCh. 11 - Prob. 9CTCh. 11 - Prob. 10CTCh. 11 - Prob. 11CTCh. 11 - Prob. 12CTCh. 11 - Prob. 13CTCh. 11 - Prob. 14CTCh. 11 - Prob. 15CTCh. 11 - Prob. 16CTCh. 11 - Prob. 17CTCh. 11 - Prob. 18CTCh. 11 - Prob. 19CTCh. 11 - Prob. 20CTCh. 11 - Prob. 21CTCh. 11 - Prob. 22CTCh. 11 - Prob. 23CTCh. 11 - Prob. 24CTCh. 11 - Prob. 25CTCh. 11 - Prob. 26CTCh. 11 - Prob. 27CTCh. 11 - Prob. 28CTCh. 11 - Prob. 1PSCh. 11 - Prob. 2PSCh. 11 - Prob. 3PSCh. 11 - Prob. 4PSCh. 11 - Prob. 5PSCh. 11 - Prob. 6PSCh. 11 - Prob. 7PSCh. 11 - Prob. 8PSCh. 11 - Database Recovery Your boss has informed you that...Ch. 11 - Prob. 10PSCh. 11 - Prob. 11PSCh. 11 - Prob. 1.1ECh. 11 - Prob. 1.2ECh. 11 - Prob. 1.3ECh. 11 - Prob. 2.1ECh. 11 - Prob. 2.2ECh. 11 - Prob. 2.3ECh. 11 - Prob. 3.1ECh. 11 - Prob. 3.2ECh. 11 - Prob. 3.3ECh. 11 - Prob. 4.1E
Knowledge Booster
Similar questions
- can u solve this questionarrow_forward1. Unsigned Integers If we have an n-digit unsigned numeral dn-1d n-2...do in radix (or base) r, then the value of that numeral is n−1 r² di Σi=0 which is basically saying that instead of a 10's or 100's place we have an r's or r²'s place. For binary, decimal, and hex r equals 2, 10, and 16, respectively. Just a reminder that in order to write down a large number, we typically use the IEC or SI prefixing system: IEC: Ki = 210, Mi = 220, Gi = 230, Ti = 240, Pi = 250, Ei = 260, Zi = 270, Yi = 280; SI: K=103, M = 106, G = 109, T = 10¹², P = 1015, E = 10¹8, Z = 1021, Y = 1024. 1.1 Conversions a. (15 pts) Write the following using IEC prefixes: 213, 223, 251, 272, 226, 244 21323 Ki8 Ki 223 23 Mi 8 Mi b. (15 pts) Write the following using SI prefixes: 107, 10¹7, 10¹¹, 1022, 1026, 1015 107 10¹ M = 10 M = 1017102 P = 100 P c. (10 pts) Write the following with powers of 10: 7 K, 100 E, 21 G 7 K = 7*10³arrow_forwardanswer shoul avoid using AI and should be basic and please explainarrow_forward
- Node A is connected to node B by a 2000km fiber link having a bandwidth of 100Mbps. What is the total latency time (transmit + propagation) required to transmit a 4000 byte file using packets that include 1000 Bytes of data plus 40 Bytes of header.arrow_forwardanswer should avoid using AI and should be basic and explain pleasearrow_forwardasnwer should avoid using AIarrow_forward
- answer should avoid using AI (such as ChatGPT), do not any answer directly copied from AI would and explain codearrow_forwardWrite a c++ program that will count from 1 to 10 by 1. The default output should be: 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10 There should be only a newline after the last number. Each number except the last should be followed by a comma and a space. To make your program more functional, you should parse command line arguments and change behavior based on their values. Argument Parameter Action -f, --first yes, an integer Change place you start counting -l, --last yes, an integer Change place you end counting -s, --skip optional, an integer, 1 if not specified Change the amount you add to the counter each iteration -h, —help none Print a help message including these instructions. -j, --joke none Tell a number based joke. So, if your program is called counter, counter -f 10 --last 4 --skip 2 should produce 10, 8, 6, 4 Please use the last supplied argument. If your code is called counter, counter -f 4 -f 5 -f 6 should count from 6. You should…arrow_forwardshow workarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Enhanced Discovering Computers 2017 (Shelly Cashm...Computer ScienceISBN:9781305657458Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. CampbellPublisher:Cengage LearningManagement Of Information SecurityComputer ScienceISBN:9781337405713Author:WHITMAN, Michael.Publisher:Cengage Learning,
- Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:CengageDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher: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
Management Of Information Security
Computer Science
ISBN:9781337405713
Author:WHITMAN, Michael.
Publisher:Cengage Learning,
Np Ms Office 365/Excel 2016 I Ntermed
Computer Science
ISBN:9781337508841
Author:Carey
Publisher:Cengage
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning