Database Concurrency Control and Data Security
In this assignment, you will analyze database concurrency control and data security. You will also study the technological advances in the field of database design.
Using the South University Online Library or the Internet, research the following:
- Database concurrency control and data security
- DBA tasks
- Technological advances in the field of databases
Based on your research and understanding, complete the following tasks:
- Outline three examples of databases that you use every day. For each database:
- Describe how the data is displayed and extracted.
- Based on what you have learned so far, discuss how you think the DBMS provides this functionality in the background.
- Analyze three websites and outline your thoughts on how databases are used to provide information and data to the consumers of the websites.
- Compare the database designs of the three websites in terms of their features, performance, and usability.
- Highlight the information that you feel is worthy of a special mention.
- What should be completed first—application design or database design; or should they be completed at the same time? Provide sufficient reasoning to support your answer.
- “Web programming has an inherent problem with concurrency control.” Do you agree with this statement? Why or why not?
- Discuss the possible solutions to resolve and manage concurrency control.
Part B—
- Create a new Microsoft Access database named DryCleaning.
Note that Microsoft Access does not support the use of SQL scripts to create databases. In a Microsoft Word document, type the SQL script that you would use to create the database. - Add a table named Customers. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:
- CustomerNumber (AutoNumber, Primary Key, required)
- FirstName (Text(25), required)
- LastName (Text(25), required)
- Phone (Text(12), required)
- Email (Text(100))
- Add a table named Invoice. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:
- InvoiceNumber (Number-Long Integer, required, Primary Key)
- CustomerNumber (Foreign Key, Number-Long Integer, Required)
- DateIn (Date/time, required)
- DateOut (Date/time)
- TotalAmount (Currency)
- Add a table named Invoice_Item. In Microsoft Word, type the SQL script that you would use to create the table. Include the following fields:
- ItemNumber (AutoNumber, Primary Key, required)
- InvoiceNumber (Foreign Key,Number-LongInteger, required)
- Item (Text(50), required)
- Quantity (Number-Long integer, required)
- UnitPrice (Currency, required)
- Write INSERT statements to add the data provided to the tables. Click here to download the data that needs to be added.
- In one Word document (SU_ITS3102_W5_A2_LastName_FirstInitial.docx), paste the SQL statement to meet the following criteria. Put a title above each as stated and save each query with the title name. You will add needed documentation from Part II to this document.
- List the phone and last name of all the customers. Titled this 01CustomerPhone-LastName
- List the phone and last name of all the customers with the first name “Nikki.” Titled this 02NikkiPhoneLastName
- List the phone, first name, and last name of all the customers having phone numbers with “2” and “3” as the second and third numbers, respectively. Titled this 03PhoneWith?23.
- Determine the maximum and minimum total amount. Save As 04AverageTotalAmount.
- Show the first and last names of all the customers who have had an order with total amount greater than $100.00. Use a subquery and present the results first sorted by last names in the ascending order and then by first names in the descending order. Titled this 05CustomersTotalAmountGreaterThan100.
- From the Customers table, concatenate each customer’s last name and first name by using the comma-space-delimited technique; name the virtual column as “Full Name.” Titled this 06CustomerLastFirstNamesConcantenated.
- Use a subquery to show the first and last name of all the customers who have had an order with an item named “Dress Shirt”. Present the results first sorted by last name in the ascending order (Titled this 07FirstLastNamesDressShirtSortedLastName) and then by first name in the descending order. Titled this 08FirstLastNamesDressShirtSortedFirstNameDescending.
- Use a join with a subquery to show the first name, last name, and total amount of all the customers who have had an order with an item named “Dress Shirt”. Present the results first sorted by last name in the ascending order (Titled this 09FirstLastNamesDressShirtSortedLastNameWithTotal) and then by first name in the descending order. Titled this 10FirstLastNamesDressShirtSortedFirstNameDescending
- Calculate the average total amount. Titled this 11AverageTotalAmount.
Part C—
- Continuing the project you have worked on in Weeks 1–4, in this final week, complete the following tasks:
- Refine your database and SQL statements by incorporating your instructor’s feedback.
- Verify that the database completely follows the business logic and design you created in the previous weeks.
- Create queries using your new database to demonstrate that the data is useful and meaningful.
- Submit the final database and database scripts to the instructor for testing and installation.