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Part A:
Describe a scenario where you might use a database rather than a file system to store data. Explain why you would choose to use a database
Why should a person developing a relational database use keys in their relational database model?
Part B:
How would you use an Entity Relationship Diagram (ERD) as a part of the design of a database application? Do you think it is necessary to utilize the ERD in the process of designing all types of database applications?
Why is it so important to choose the correct Data Type for each field in the database? What kinds of problems could choosing an incorrect Data Type cause?
Part C:
Discuss some ways that data might be filtered using a query to aid in making decisions. Explain your answer.
Identify and describe two scenarios where you might use a form in a database application. Explain why you would use a form in these examples.
Part D:
Identify and discuss the steps you would take to test a database application.
Discuss the importance of planning the implementation of a database application. What are some of the pitfalls of not planning for the implementation of a database application?
Consider two ways to compute the names of employees who earn more than $100,000 and whose age is equal to their manager’s age. First, a nested query:
Explain the difference between the > and > relationships in use case diagrams?
From the JD, the set of relation schemes SP, PJ, and JS is a lossless-join decomposition of SPJ. Construct an instance of SPJ to illustrate that no two of these schemes su?ce.
Write a SELECT statement which returns three columns: VendorName, InvoiceCount, and InvoiceSum. InvoiceCount is the count of the number of invoices, and InvoiceSum is the sum of the InvoiceTotal column.
i. describe the application that you would like to design. this should include the purpose of the application and an
Provide an Entity Relationship Model (ERM) that will describe the data structure that will store all data elements and analyze the university's requirements and provide a proposal to organize all the required data elements.
let t1 have the operations ry wy and t2 have the operations ry wy rx wx. consider the different possible concurrent
United Broke Artists (UBA) is a broker for not-so-famous artists. UBA maintains a small database to track painters, paintings, and galleries. A painting is created by a particular artist and then exhibited in a particular gallery
Explain why SQL or Access is better suited for an entire organization. When trying to design a database, how would you identify the functional dependencies associated with a relational database
Business Intelligence and Data Warehouses, Businesses today are extremely reliant on large amounts of data for making intelligent business decisions. Likewise, the data warehouses are often structured in a manner that optimizes processing large amo..
your database has been a hit. you have been called back to the customers headquarters and they want a detailed report
Data-flow diagrams can be used to model both the physical and logical systems. Data models can be analyzed to identify possible inconsistencies that exist between two sets of diagrams or within a single DFD.
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