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http://homepages.ius.edu/jholly/c343/labs/fa13/lab1.htm

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information system design
information system design
Answer the following questions
(please copy the question’s text before each of your answers) and submit them
to your professor for grading.
1. Assume that at Pine Valley
Furniture products are composed of components, products are assigned to
salespersons, and components are produced by vendors. Also assume that in the
relation PRODUCT (Prodname, Salesperson, Compname, Vendor), Vendor is
functionally dependent on Compname and Compname is functionally dependent on
Prodname. Eliminate the transitive dependency in this relation and form 3NF
(third normal form) relations.
2. Transform the E-R diagram of
Figure 8-3 into a set of 3NF relations. Make up a primary key and one or more
non-keys for each entity.
3. Transform the E-R diagram of
Figure 9-21 into a set of 3NF relations.
4. Consider the list of individual
3NF relations below. These relations were developed from several separate
normalization activities.
PATIENT(Patient_ID,
Room_Number, Admit_Date, Address)
ROOM(Room_Number, Phone,
Daily_Rate)
PATIENT(Patient_Number,
Treatment_Description, Address)
TREATMENT(Treatment_ID,
Description, Cost)
PHYSICIAN(Physician_ID, Name,
Department)
PHYSICIAN(Physician_ID, Name,
Supervisor_ID)
(a) Merge these relations into a
consolidated set of 3NF relations. State whatever assumptions you consider
necessary to resolve any potential problems you identify in the merging
process. (b) Draw an E-R diagram for your answer to part “a”.
5. Consider the following 3NF
relations about a sorority or fraternity:
MEMBER(Member_ID, Name,
Address, Dues_Owed)
OFFICE(Office_Name,
Officer_ID, Term_Start_Date, Budget)
EXPENSE(Ledger_Number,
Office_Name, Expense_Date, Amt_Owed)
PAYMENT(Check_Number,
Expense_Ledger_Number, Amt_Paid)
RECEIPT(Member_ID, Receipt_Date,
Dues_Received)
COMMITTEE(Committee_ID,
Officer_in_Charge)
WORKERS(Committee_ID,
Member_ID)
(a) Foreign keys are not indicated
in these relations. Decide which attributes are foreign keys and justify your
decisions. (b) Draw an E-R diagram for these relations, using your answer to
part “a”. (c) Explain the assumptions you made about cardinalities in your
answer to part “b”. Explain why it is said that the E-R data model is more
expressive or more semantically rich than the relational data model.
6. Consider the following functional
dependencies:
Applicant_ID --> Applicant_Name
Applicant_ID -->
Applicant_Address
Position_ID --> Position_Title
Position_ID -->
Date_Position_Opens
Position_ID --> Department
Applicant_ID + Position_ID -->
Date_Applied
Applicant_ID + Position_ID +
Date_Interviewed --> (Nothing)
(a) Represent these attributes with
3NF relations. Provide meaningful relation names. (b) Represent these
attributes using an E-R diagram. Provide meaningful entity and relationship
names.
7. Suppose you were designing a file
of student records for your university’s placement office. One of the fields
that would likely be in this file is the student’s major. Develop a coding
scheme for this field that achieves the objectives outlined in Chapter 10 for
field coding.
8. Suppose you created a file for
each relation in your answer to question “3” above. If the following queries
represented the complete set of accesses to this database, suggest and justify
what primary and secondary key indices you would build.
(a) For each PART in Item_Number
order list in Vendor_ID, sequence all the vendors and their associated prices
for that part. (b) List all PART RECEIPTs, including related PART fields for
all the parts received on a particular day. (c) For a particular VENDOR, list
all the PARTs and their associated prices that VENDOR can supply.

C++ recursive function
C++ recursive function
how would I write these functions recursively in c++int account::findAccount(int acctNumber, account accts[MAX], int count){for (int i = 0; i < count; i++){if (accts[i].acctNumber == acctNumber)return i;}return -1;}And this function as wellvoid account::displayAll(account accts[MAX], int count){for (int i = 0; i < count; i++){accts[i].displayAccount();cout << endl;}}

Information Systems (IS) Risk Management Paper
Information Systems (IS) Risk Management Paper
Resource: Overview ofInformation Systems and Technology Paper assignment from Week OneReview the information selected for the Overview of Information Systems and Technology Paper assignment from Week One.Explore your system’s vulnerabilities, and address the nature of potential internal and external threats and natural or unintended events that may jeopardize it.Determine what levels of security are appropriate to secure the information system while allowing a maximum amount of uninterrupted workflow.Write a 1,400- to 2,100-word paper that describes principles of risk management as they pertain to the chosen system and its associated technology.Format your paper consistent with APA guidelines.

NTC 405 TCP/IP
NTC 405 TCP/IP
Write a
4-7 page paper including the following:
·
Analyze the current options available for use of
TCP/IP and OSI models for businesses.
·
Research options for improving the current use
of TCP/IP and recommend new software and equipment that’s available.
·
Describe how use of equipment, software, and
multiplexing could aid in improving use for communications which would reduce
network congestion.
Use
APA formatting for the paper.

Information systems design
Information systems design
Answer the following questions (please copy the question’s text
before each of your answers) and submit them to your professor for
grading. 1. Consider software applications that you regularly use
that have menu interfaces, whether they be PC- or mainframe-based
applications. Evaluate these applications in terms of the menu design
guidelines outlined in Table 11-1 of our textbook.2. Consider the
possible design of a registration system for a hotel aimed at
front-desk hotel employees. Following the design specification items in
Fig. 11-2, briefly describe the relevant users, tasks, and displays
involved in such a system.3. Imagine the possible design of a
system used to register students at a university. Discuss the user,
task, system, and environmental characteristics (see Table 10-10 of our
textbook) that should be considered when designing the interface for
such a system.4. For the three common methods of system
interaction --command language, menus, and objects-- recall a software
package that you have used recently and list what you liked and disliked
about the package with regards to the interface. What were the
strengths and weaknesses of each interaction method for this particular
program? Which type of interaction do you prefer for which
circumstances? Which type do you believe will become most prevalent?
Why?5. Briefly describe three or more different business tasks
that are good candidates for form-based interaction within an
information system.6. Propose three or more specific settings where natural language interaction would be particularly useful and explain why.7.
Examine the help systems for three or more software applications that
you use. Evaluate each using the general guidelines provided in Table
12-11 of our textbook.8. List four contributing factors that have
acted to impede the design of high-quality interfaces and dialogues on
Internet-based applications.
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