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Please respond to the following discussion below with 150 words or more relating to relational algebra and its relation to SQL.

As a collection of algebraic structures, relational algebra was  developed at IBM by Edgar F. Codd. It is used to represent data stored  in relational databases, as well as to define queries on that data. An  instance of relational algebra may be described as a procedural query  language that employs unary or binary operators to execute queries.  Users of relational database systems must be able to query database  instances using a query language. Relational algebra or relational  calculus is used to query a relational database system. Recursive  relational algebra is done on a relation, and intermediate outcomes are  also considered relations. For Edgar F. Codd’s relational paradigm, SQL  was one of the first commercially available programming languages.  Despite the fact that they are based on similar principles, their syntax  differs. There are several advantages to relational algebra, including  its closed nature, rigorous basis, and simplicity of semantics. SQL, on  the other hand, is a subset of relational algebra with easy formatting  capabilities, aggregate functions, and a complex semantics. Below is an  example from the course readings that illustrate the difference in  syntax:

SELECT DISTINCT dname
FROM department, course, empcourse, employee WHERE cname = `Further Accounting’

AND course.courseno = empcourse.courseno AND empcourse.empno = employee.empno AND employee.depno = department.depno;

The equivalent relational algebra is

PROJECTdname (department JOINdepno = depno ( PROJECTdepno (employee JOINempno = empno (

PROJECTempno (empcourse JOINcourseno = courseno ( PROJECTcourseno (SELECTcname = `Further Accounting’ course)

)) ))

))

References:

Relational algebra – example. (n.d.). https://web.archive.org/web/20160326123806/http:/db.grussell.org/section011.html.

Relational algebra. (n.d.). https://www.tutorialspoint.com/dbms/relational_algebra.htm.

The final portfolio project is a three- part activity. You will respond to three separate prompts but prepare your paper as one research paper. Be sure to include at least one UC library source per prompt, in addition to your textbook (which means you’ll have at least 4 scholarly sources cited). 

Start your paper with an introductory paragraph.

Prompt 1 “Data Warehouse Architecture” (2-3 pages): Explain the major components of a data warehouse architecture, including the various forms of data transformations needed to prepare data for a data warehouse. Also, describe in your own words current key trends in data warehousing. 

Prompt 2 “Big Data” (1-2 pages): Describe your understanding of big data and give an example of how you’ve seen big data used either personally or professionally. In your view, what demands is big data placing on organizations and data management technology? 

Prompt 3 “Green Computing” (1-2 pages):  One of our topics in Chapter 13 surrounds IT Green Computing. The need for green computing is becoming more obvious considering the amount of power needed to drive our computers, servers, routers, switches, and data centers. Discuss ways in which organizations can make their data centers “green”. In your discussion, find an example of an organization that has already implemented IT green computing strategies successfully. Discuss that organization and share your link. You can find examples in the UC Library.

Conclude your paper with a detailed conclusion section. 

The paper needs to be approximately 5-8 pages long, including both a title page and a references page (for a total of 7-10 pages). Be sure to use proper APA formatting and citations to avoid plagiarism.

Identify the differences between using the two different combinations of data backup techniques. 

Assignment Directions: Briefly discuss the differences between using the two different combinations of data backup techniques.  In a word document, discuss the assigned topic in approximately ten sentences.   

Using the Web or other resources, research an example of Cyber Terrorism.

Write a brief Discussion describing the terrorism attack and it’s aftermath. Comment on ways the attack could have been prevented.

Read and respond to at least two other students Discussions.

Post between 200 and 300 words.

The discussion should have zero percent plagiarism

Please include the references

Based on your experience in the online lab, using the assigned reading and any additional resources in the Library or online, develop three paragraphs describing the malware analysis portion of the forensic analyst portion of the playbook. The paragraphs should include detection, identification, and analysis of possible future malware discoveries.

String Wrapper:

Write a program that inputs a string from keyboard and converts all occurrence of letter t(lowercase t and uppercase t) do letter uppercase case d. The input string can have any combination of letters, digits, lowercase or uppercase.

Example: “Tod AND teachers went to parTy” should be replace with “Dod AND Deachers wenD to parDy”

Network Managment project

Eller Software Services has received contract revenue information in a text file. You import, sort, and filter the data. You also create a PivotTable, prepare a worksheet with subtotals, and format related data as an Excel table.

[Student Learning Outcomes 4.1, 4.3, 4.4, 4.5, 4.6, 4.8]

Files Needed: EllerSoftware-04.xlsx (Available from the Start File link.) and EllerSoftwareText-04.txt (Available from the Resources link.)

Completed Project File Name: [your name]-EllerSoftware-04.xlsx

Skills Covered in This Project

• Import a text file.
• Use AutoFilters.
• Sort data by multiple columns.
• Create a PivotTable.
• Format fields in a PivotTable.
• Use the Subtotal command.
• Format data in an Excel table.
• Sort data in an Excel table.

This image appears when a project instruction has changed to accommodate an update to Microsoft 365 Apps. If the instruction does not match your version of Office, try using the alternate instruction instead.

1. Open the EllerSoftware-04.xlsx start file. Click the Enable Editing button. The file will be renamed automatically to include your name. Change the project file name if directed to do so by your instructor, and save it.
2. Import the EllerSoftwareText-04.txt file downloaded from the Resources link and load it to begin in cell A4. The text file is tab-delimited.
3. Format the values in column H as Currency with zero decimal places.
4. Click cell G4 and use the AutoFilter arrow to sort by date oldest to newest.
5. Click cell F4 and use the AutoFilter arrow to sort by product/service name in ascending order.
6. Filter the Date column to show only contracts for September using the All Dates in the Period option.
7. Edit the label in cell A2 to display Contract Amounts for September.
8. Select cells A1:H2 and press Ctrl+1 to open the Format Cells dialog box. On the Alignment tab, choose Center Across Selection.
9. Change the font size for cells A1:H2 to 20 pt (Figure 4-102) and close the Queries & Connections pane.Figure 4-102 Imported data sorted and filtered
10. Copy the Contracts sheet to the end and name the copy Data.
11. Clear the date filter.
12. Select cell A5 and click the PivotTable button [Insert tab, Tables group]. The range is identified as the EllerSoftwareText file.
13. Verify that New Worksheet is selected, deselect the Add this data to the Data Model button, and click OK.
14. Name the sheet PivotTable. Close the Queries & Connections pane.
15. Show the Product/Service and Contract fields in the PivotTable.
16. Drag the Contract field from the Choose fields to add to report area below the Sum of Contract field in the Values area so that it appears twice in the report layout and the pane (Figure 4-103).Figure 4-103 “Contract” field appears twice in the report
17. Select cell C4 and click the Field Settings button [PivotTable Analyze tab, Active Field group]. Type Average Contract as the Custom Name, choose Average as the calculation, and set the Number Format to Currency with zero decimal places.
    Select cell C4 and click the Field Settings button [PivotTable Tools Analyze tab, Active Field group]. Type Average Contract as the Custom Name, choose Average as the calculation, and set the Number Format to Currency with zero decimal places.
18. Select cell B4 and set its Custom Name to Total Contracts and the number format to Currency with zero decimal places.
19. Apply Brown, Pivot Style Dark 3.
20. Select the Data sheet tab and copy cells A1:A2. Paste them in cell A1 on the PivotTable sheet.
21. Select Align Left for cells A1:A2 and 16 pt. as the font size. Edit the label in cell A2 to display Contract Amounts, September through December (Figure 4-104).Figure 4-104 Completed PivotTable
22. Copy the Data sheet to the end and name the copy Subtotals.
23. Select cell D5 and sort by City in A to Z order.
24. Select cell A5 and convert the table to a range. Select cells A5:H31 and apply No Fill [Home tab, Font group].
25. Use the Subtotal command to show a SUM for the contract amounts for each city.
26. Edit the label in cell A2 to display Contract Amounts by City.
27. Format the sheet to Landscape orientation, center the page vertically, and scale it to fit one page.
28. Click the Billable Hours sheet tab and select cell A4.
29. Click the Format as Table button [Home tab, Styles group], use Orange, Table Style Medium 10, and remove the data connections.
30. Type 5% Add On in cell E4 and press Enter.
31. Build a formula in cell E5 to multiply cell D5 by 105% and press Enter to copy the formula.
32. Select cells A1:A2 and left align them. Then select cells A1:E2, click the Launcher for the Alignment group [Home tab], and select Center Across Selection from the Horizontal list.
33. Use the AutoFilter arrows to sort by date in oldest to newest order.
34. Save and close the workbook (Figure 4-105).Figure 4-105 Excel 4-4 completed
35. Upload and save your project file.
36. Submit project for grading.

Using your knowledge of Traditional, Agile, and Hybrid answer the following:Agile:

1. Explain how iterative project processes help expose requirements?
2. Explain how iterative project process help manage risks associated with changing requirements?
3. Identify and categorize new projects, products, and organizational risks to which Agile projects are susceptible. 
4. Identify and categorize new projects, products, and organizational risks to which Traditional projects are susceptible. 
5. Describe the characteristics of leadership required in an agile project.  Which characteristics are the same and which are different when leading a waterfall project?  

Hybrid

1. Describe a hybrid project management process?
2. Describe the benefits to a company for creating a hybrid process? 

Traditional

1. What are the benefits to a company for using a traditional approach in project management?  What are the negatives? 
2. Given your experience and your research, what is the future of project management methodologies in your industry?

Text-

Title: Effective Project Management 

ISBN: 9781119562801 

Authors: Robert K. Wysocki 

Publisher: Wiley 

Publication Date: 2019-05-07 

Edition: 8th Edition

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