Which data access technology should you implement?

###BeginCaseStudy###
Case Study: 1

Scenario 1
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 CreateMonthlyTotalsReport() 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

Featured Boo ks.xml

###EndCaseStudy###

You need to choose the appropriate data access strategy for the college textbook area of the
web application.
Which data access technology should you implement?

A.
WCF Data Services

B.
ADO.NET

C.
Entity Data Model (EDM)

D.
UNQ to SQL