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Question: Which of the subsequent is true about Data Warehouses?
Data Warehouses are large relational databases similar to Microsoft Access - A
Data Warehouses are multidimensional data storages that can only be used for daily transaction processing. - B
Data Warehouses are multidimensional data storages helping in decision making and supporting business intelligence. - C
Can you explain about the Data Warehouses and relational databases?
Briefly describe how a cross-site scripting attack can be used to compromise the confidentiality of information stored in a database
Consider the scenario from Exercise 2.4, where you designed an ER diagram for a company database. Write SQL statements to create the corresponding relations and capture as many of the constraints as possible. If you cannot capture some constraints, e..
what amount would the company have to charge for the Ericson wedding cake to just break even - what would be the overall margin on the order?
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.
Can Oracle have multiple group functions in the same SELECT list of query (i.e can we do a COUNT and AVG)? Let us assume we wanted to find lowest, highest, average.
Design an Relational Model (RM) model of a database (DB) that will be useful for each of the chosen enterprises. (Hint: You may choose to translate the 2 ER model designs you created ).
Find '(2007), '(2008), and '(b), where b is the integer obtained from the last four digits of your student number.
Assume that data warehouse for video game shop consists of th three dimensions: time, player, and game, and two measures number of games played and price paid per game. Sketch schema diagram for data warehouse using the star schema.
Write a SELECT statement that returns three columns: EmailAddress, OrderID, and the order total for each customer. To do this, you can group the result set by the EmailAddress and OrderID columns.
Use SQL to create the following database; to including referential integrity. You may NOT use the GUI for this part of the exercise. COURSE ( CourseNu, CourseName, CreditHrs).
In each task, please feel free to make any assumption necessary for the readers. The explanation of your assumptions can help the readers to understand what you have considered differently but as important criteria in producing your model.
our current database uses dictionary-managed tablespaces. In running various performance tuning scripts, you have discovered that one of these tablespaces seems to have run out of space long before you calculated that it would.
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