Watch the Introduction to Databases video (https://www.youtube.com/watch?v=D-k-h0GuFmE ) by Dr. Jennifer Widom of Stanford University and respond to the items in Part 1.   Feel free to pause the video to respond to the items and re-watch segments as necessary.  Alternatively, you may prefer to view the presentation once through and then again to complete the assignment.  The presentation is 13 minutes long.

Part 2 of the assignment is not specifically related to the video, but will require some additional investigation and research.

Note that this presentation is part of a database course for computer science students at Stanford University.  When Dr. Widom states ‘in this course we will cover’ or that ‘we will cover’ a given topic in greater detail later in the course, she is referring to her course, not ours.

Exp19_Excel_Ch07_ML2_Finances

Project Description:

Your family is considering purchasing a house and investing in a business venture. You started the structure for a loan amortization table and the investment table. You will complete the first five years of the 20-year loan amortization table. To complete the table, you will enter formulas to calculate the beginning balance, monthly payment, and ending balance. You will use financial functions to calculate the interest and principal paid for each monthly payment. In addition, you want to calculate cumulative interest after the first year, total interest over the life of the loan, and the amount of principal paid after the first year. You also want to see how many months half or more of the payment is for interest. You will then focus your attention on completing an investment table using date functions, formulas, and a financial function to calculate the future value of the investment.

Start Excel. Download and open the   file named Exp19_Excel_Ch07_ML2_Finances.xlsx. Grader has automatically added   your last name to the beginning of the filename.

The first step is to enter a formula to reference the loan amount for   the beginning balance for the first payment.
 

  In cell B9, enter a formula that references cell D2.

A loan amortization table usually contains a column that displays the   monthly payment for each row.
 

  In cell C9, enter a formula to reference the monthly payment in cell D3. Use   a mixed reference and copy the formula to the range C10:C68.

The monthly payment indicates   the total amount of the payment, which includes principal and interest.   Interest is calculated based on the loan amount, the rate, the payment   number, and the number of payments.
 

  In cell D9, enter the IPMT function to calculate the interest paid for the   first month using mixed cell references to the input area for the Rate, Nper,   and PV arguments and using cell A9 for the Per argument. Make sure the result   is a positive value and copy the function to the range D10:D68.

After calculating the interest   paid, the rest of the monthly payment repays the principal.
 

  In cell E9, enter the PPMT function to calculate the principal paid for the   first month using mixed cell references to the input rea for the Rage, Nper,   and PV argument and using cell A9 for the Per argument. Make sure the result   is a positive value and copy the function to the range E10:E68.

The last column of the loan   amortization table calculates the ending balance.
 

  In cell F9, calculate the ending balance by subtracting the Principal   Repayment from the Beginning Balance in row 9. Copy the formula to the range   F10:F68.

The beginning balance for each   payment is calculated and entered in column B.
 

  In cell B10, enter a formula that references the first month’s ending balance   in cell F9. Copy the formula to the range B11:B68.

Ensure that Accounting Number   Format is applied to the range B9:F68.

You want to calculate the total   interest paid for the first year.
 

  In cell F2, insert the CUMIPMT function to calculate the cumulative interest   paid for the first year. Use A9 for the Start_period argument and B6 for the   End_period argument. Use 0 as the Type argument. Make sure the result is a positive value.

Now you want to calculate the   total interest paid for the entire loan.
 

  In cell F3, insert the CUMIPMT function to calculate the total cumulative   interest paid for the entire loan. Use A9 for the Start_period and D6 for the   End_period arguments. Make sure the result is a positive value.

You want to calculate the cumulative   principal paid for the first year.
 

  In cell F4, insert the CUMPRINC function to calculate the cumulative   principal paid for the first year. Use A9 for the Start_period and B6 for the   End_period arguments. Make sure the result is a positive value.

In cell F5, insert the COUNTIF   function to count the number of payment periods in which the interest in the   loan amortization table is higher than one-half of the monthly payment (cell   D4).

Apply General number format to   cell F5.

You want to extract the year and   use it to determine the payoff year.
 

  Display the Investment sheet. In cell D4, insert the YEAR function to extract   the year from cell D3 and add the number of years (cell B3). You will change   the format of the result in the next step.

You need to format the result in   cell D4 as a number.
 

  Ensure that General number format is applied to cell D4.

At the end of each period, you   will add $125 to the investment.
 

  In cell D7, enter a formula that references cell D2. Use a mixed reference to   ensure the row number does not change. Copy the formula to the range D8:D54. 

You want to calculate the   interest earned per period.
 

  In cell C7, multiply the beginning balance in cell B7 to the result of   dividing the APR by the No. of Pmts per Year. Use mixed and relative cell   references. Copy the formula to the range C8:C54.

You are ready to calculate the   ending balance for each payment period.
 

  In cell E7, add the Beginning Balance, Interest Earned, and End-of-Period   Investment for row 7. Copy the formula to the range E8:E54.

You will use a nested function   to calculate the dates in column A.
 

  In cell A8, create a DATE function with a nested YEAR function, a nested   MONTH function and then add 1 to increment the month, and a nested DAY   function. The function arguments should reference the date on the previous   row.

Copy the function from cell A8   to the range A9:A54 but preserve the fill formatting.

In cell E56, insert the FV   function to calculate the future value of the investment use references to   the respective cells in the input area for the arguments. Make sure the   result is positive. Leave the Type argument empty.

Create a footer with your name   on the left side, the sheet name code in the center, and the file name code   on the right side of both sheets.

Save and close Exp19_Excel_Ch07_ML2_Finances.xlsx.   Exit Excel. Submit the file as directed.

Cakes By Monica Excel Assignment

For this assignment you will perform calculations in an Excel file. You can find the file in Week 2. Please note, it is your responsibility to have the correct software!

Instructions:

Cakes by Monica (a bakery under the umbrella of the Café Brulé restaurant) in Vermillion, SD makes cupcakes for customers to purchase both in the store and in bulk orders for birthday parties and weddings.

Suppose in the short-run, a bakery like Cakes by Monica has a fixed amount of capital but can hire college students from a local college easily to increase production as needed.  A production schedule is provided for you where Q is dozens of cupcakes.

a) Using the schedule provided, calculate the marginal product of labor when K = 3. 

b) Using your calculations, for which workers are there increasing, decreasing, and negative marginal returns to labor? 

c) Suppose this bakery decides to add another unit of capital in the long-run.  Find the marginal product of the 4th unit of capital and the marginal product of labor when K = 4.

d) Create a graph of the marginal product of labor for K=3 and K=4.

e) Using your graph and the data, how does the addition of another unit of capital affect the productivity of labor? 

Please provide all answers (calculations and written explanations) in the provided Excel File. Save your file with your Firstname_Lastname and submit it in the designated area.

Write an HTML code to produce the following text:

TECH581, Electronic Business Systems, Spring 2021 Online

Hint:  You can download and use Toniarts Easy HTML Editor

https://easyhtml.software.informer.com/download/

Project Part 5: Final Risk Management Plan

Compile all project parts into a single risk management plan document. Reduce redundant text, if any. Incorporate instructor feedback on the previous submissions in the final risk management plan.

Submission Requirements

• Format: Microsoft Word (or compatible)
• Font: Arial, size 12, double-space
• Citation style: Your school’s preferred style guide
• Estimated length: 14–20 pages

• 4.1 List ways in which secret keys can be distributed to two communicating parties.
• 4.2 What is the difference between a session key and a master key?
• 4.3 What is a key distribution center?
• 4.4 What entities constitute a full-service Kerberos environment?
• 4.5 In the context of Kerberos, what is a realm?
• 4.6 What are the principal differences between version 4 and version 5 of Kerberos?
• 4.7 What is a nonce?
• 4.8 What are two different uses of public-key cryptography related to key distribution?
• 4.9 What are the essential ingredients of a public-key directory?
• 4.10 What is a public-key certificate?
• 4.11 What are the requirements for the use of a public-key certificate scheme?
• 4.12 What is the purpose of the X.509 standard?
• 4.13 What is a chain of certificates?
• 4.14 How is an X.509 certificate revoked?

 write a paper of 3–4 pages not including the reference page to address the following question shown below. Use the library, the Internet, and your text materials to research the history of GUI in Java, and discuss at least 2 different technologies that can be used to create a GUI. Be sure to cite all of your sources using APA format. 

Homework assignment

The following table records the results for would-be actors who are undergoing a preliminary screening audition for a particular role in a play. Any actor who is turned down for a role, in the preliminary screening, is not allowed to re-audition for that role again. (Everyone who passes will be re-auditioned later along with others who passed the preliminary screening, and that data will be put in a separate table.)

Actor 

Role 

AuditionDate

Result 

AaryanChaudary

Julius Caesar 

2018-09-13 

reject 

AaryanChaudary

Brutus 

2018-09-14 

pass 

Barry Evans 

Julius Caesar 

2018-09-13 

pass 

Isaac Biko 

Cassius 

2018-09-13 

pass 

Isaac Biko 

Julius Caesar 

2018-09-13 

pass 

The primary key of this table is Actor + Role.

Question 1

What bad consequences could follow if, in creating the table – before we added the data – we defined the primary key of the table as:

(a) Actor alone?

(b) Role alone?

(c) AuditionDate Alone?

(d) Actor + Role + AuditionDate?

(e) Actor + Role + AuditionDate + Result?

Question 2

Suppose it is decided to allow actors to re-audition for roles for which they were initially rejected, at a later date. Would we need to change the definition of the primary key? If we didn’t change it, what problem might arise? If we changed it, what would the new key be? Explain your answer.

********************************************************************************************************

Normalizing an Unnormalized Relation 

The following table holds information about the annually-recorded weight of particular prize sheep, and about the veterinarians (vets) who weigh them. Each sheep belongs to a particular owner. No sheep is owned by more than one owner. Each sheep’s birthdate and current owner is recorded. Every year, a veterinarian weighs each prize sheep and records its weight. The date of the weighing, and the ID number of the vet, plus the mobile phone number of the vet, is recorded. Vets have only one mobile phone number. The Primary Key of the table recording this information is SheepID+WeighingDate. The table has not been normalized beyond First Normal Form. That is, there are no ‘repeating groups’, but there may be Partial and Transitive Dependencies.

SheepID

Owner 

Birthdate   

WeighingDate

Vet 

Weight 

VetPhoneNum

K3922 

McNab013 

2013-05-12 

2013-08-14 

M330 

22 

7633088852 

K3922 

McNab013 

2013-05-12 

2014-06-02 

S929 

34 

7609865463 

K3922 

McNab013 

2013-05-12 

2015-08-02 

M330 

43 

7633088852 

K3922 

McNab013 

2013-05-12 

2016-07-30 

P301 

53 

7682907965 

K3922 

McNab013 

2013-05-12 

2017-08-12 

P301 

52 

7682907965 

K3922 

McNab013 

2013-05-12 

2018-07-22 

S929 

51 

7609865463 

T8832 

McNab013 

2012-03-26 

2012-08-14 

K339 

19 

7602907550 

T8832 

McNab013 

2012-03-26 

2013-09-01 

S929 

26 

7609865463 

T8832 

McNab013 

2012-03-26 

2014-08-15 

K339 

32 

7602907550 

T8832 

McNab013 

2012-03-26 

2015-07-28 

K339 

40 

7602907550 

T8832 

McNab013 

2012-03-26 

2016-08-11 

T975 

42 

7646746741 

P9742 

Smith002 

2014-05-10 

2014-09-11 

K339 

14 

7602907550 

P9742 

Smith002 

2014-05-10 

2015-08-10 

S300 

25 

7629920821 

P9742 

Smith002 

2014-05-10 

2016-08-29 

K339 

35 

7602907550 

P9742 

Smith002 

2014-05-10 

2017-09-01 

S929 

44 

7609865463 

P9742 

Smith002 

2014-05-10 

2018-08-22 

S929 

51 

7609865463 

M3110 

Smith002 

2015-05-12 

2015-09-12 

S300 

15 

7629920821 

M3110 

Smith002 

2015-05-12 

2016-09-10 

S300 

26 

7629920821 

M3110 

Smith002 

2015-05-12 

2017-08-17 

K339 

34 

760290755 

Question 3

Identify the Functional Dependencies in this table. Your answer should conform to the following format: If, taken together, attributes A and B determine C, show it this way:

A + B → C 

Question 4

The above table in question 3 is susceptible to update, deletion, and insertion anomalies. Examine the ten possible problems. (Some of these problems are examples of normalization anomalies, and some are not.) For each of the 10 problems (a to j) below state whether there are 

Update 

Anomaly 

Deletion 

Anomaly 

Insertion 

Anomaly 

None of these. 

Problem 

a. Instead of   entering ‘2014-08-15’ for one of the weighing dates, ‘2104-08-15’ could be   entered instead. 

b. We cannot   insert information about a new vet (such as their mobile phone number) until   they have weighed a sheep. 

c. If we delete   all the tuples about a particular sheep, we lose all the information about   that sheep. 

d. If we delete   all the tuples for sheep K3922, we lose information about Vet M330’s mobile   phone number. 

e. We cannot   enter ownership and birthdate information about a sheep until it has been   weighed. 

f. A Vet could   record a sheep’s weight incorrectly. 

g. If a Vet   changes their mobile phone number, we could record the change in some of the   tuples with thier ID, and not in others. 

h. If a Vet   changes their mobile phone number, we could record the new number   incorrectly. 

i. If we delete   information about a Vet, we lose their mobile phone number. 

j. If sheep is   sold to a new owner, we could change some of its Owner values but not others.   

Question 5

Split the above  table from question 3 above into tables in BCNF, specifying the Primary Key of each table, and showing the first and last tuples for each table (following the order of tuples in the original table).

Discussion 4.1

Due: Initial Post due Wednesday, Replies due Sunday

What is ICAAN (The Internet Corporation for Assigned Names and Numbers)? Briefly describe its function. 

Case Study 4.1

Due: Sunday, End of Module by 11:55 p.m. EST

Midterm Requirements

• Individual Paper:
  • Describe each of the following Non-State Actors: NGOs, Organized Crime, Corporations, Terrorists, Activists, Individuals.

Writing Requirements: 

• 4-5 page paper in APA format, for citations and references
• Use the APA template located in the Student Resource Center to complete the assignment.

Instructions

For this week you will design a model schema (table structure) based on the data model shown below:

  First Table: Employee entity:

          EmployeeID

          Employee First Name

          Employee Last Name

          Employee Department

          Employee Position

          Employee Email

          Employee Phone

  Second Table: Project Entity

          ProjectID

          Project Name

          Project Description

          Project Start Date

          Project End Date

          Project Budget Code

 Third Table: Department

          Department Number

          Department Title

          Location

  Fourth Table: Assignment

          ProjectID

          EmployeeID

          Hours Worked

You will design the physical database diagram consisting of four tables using the database design language (DBDL) notation and table composition format that must include table name, attributes, data types, validation criteria.

This assignment does not follow APA format expectations for citations and references.

Upload your document, (database schema design), and click the Submit to Dropbox button.