DRAG DROP
The UploadOrder() method in the UploadCallbackService service is not implementing the
callback behavior defined in the IUploadCallBackService interface.
You need to modify the class to implement the required callback behavior.
What should you do? (To answer, drag the appropriate code segments to the correct
location or locations in the answer area. Each code segments may be used once, more than
once, or not at all. You may need to drag the split bar between panes or scroll to view
content.)
Answer: 
Explanation:
Case Study: 3
Scenario 3
Background
You are developing an online bookstore web application that will be used by your
company’s customers.
Technical Requirements General requirements:
The web store application must be an ASP.NET MVC application written in Visual
Studio. The application must connect to a Microsoft SQL database.
The GetTop100Books() method is mission critical and must return data as quickly as
possible.
It should take advantage of fast, forward-only, read-only methods of reading data. The
ImportBooks() method must keep a copy of the data that can be accessed while new
books are being imported without blocking reads. The Create MonthlyTotalsReport()
method must lock the data and prevent others from updating or inserting new rows until
complete. The college textbook area of the web application must get data from a daily
updated CSV file. The children’s book area of the web application must get data directly
from a local database. It must use a connection string. It must also support access to the
stored procedures on the database. Further, it is required to have strongly typed objects.
Finally, it will require access to databases from multiple vendors and needs to support
more than one-to-one mapping of database tables. The cookbook functionality is
contained within a client-side application that must connect to the server using HTTP
and requires access to the data using JavaScript. The BookApiController class must
have a method that is able to perform ad-hoc queries using OData.
The RESTful API of the bookstore must expose the following endpoints.
Application Structure
PurchaseOrders.xml
FeaturedBooks.xml
