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Entity Framework Online Skills Assessment Test

Topics Covered

  • Lazy Load
  • Entity Validation
  • Entity States
  • Entity Objects
  • Deleting an Entity
  • Entity Properties
  • Transactions and SQL
  • Entity Model
  • Entity Framework Designer

Useful for hiring

  • Entity Framework Developer
  • .Net Architect/Developer
  • Senior Software Engineer - Entity Framework

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Question

I can not use LIKE operator in Entity framework. And I can not find anything about supporting operator on queries.
What is the best replacement for this?

Answer
    • var q = EFContext.Products.Where(x =>
      SqlFunctions.Find("%CD%BLUE%", x.ProductName) > 0);

    • var q = EFContext.Products.Where(x =>
      SqlFunctions.PatIndex("%CD%BLUE%", x.ProductName) > 0);

    • var q = EFContext.Products.Where(x =>
      SqlFunctions.Search("%CD%BLUE%", x.ProductName) > 0);

Question

application database contains following tables:
Order: OrderID, CustomerID,OrderDate, ShipAddress
Order_Detail: OrderID,PRoductID, UnitPrice,Quantity.
You need to create a LINQ query to retrieve a list of objects that contains the OrderID and CustomerID properties, the total price amount of each Order record. 

Answer
    • from details in dataContext.Order_Detail 
      group details by details.OrderID into g 
      join order in dataContext.Orders on g.Key equals order.OrderID 
      select new { 
          OrderID = order.OrderID,
          CustomerID = order.CustomerID,
          TotalAmount = g.Sum(od = >od.UnitPrice * od.Quantity) 

    • dataContext.Order_Detail.GroupJoin(dataContext.Orders,  
      d = >d.OrderID,  
      o = >o.OrderID,   (dts, ord) = >new { 
          OrderID = dts.OrderID,
          CustomerID = dts.Order.CustomerID,
          TotalAmount = dts.UnitPrice * dts.Quantity 
      } ) 
      EntityConnection

    • from order in dataContext. 
      Orders group order by order.OrderID into g 
      join details in dataContext.Order_Detail on g.Key equals details.OrderID 
      select new { 
          OrderID = details.OrderID,
          CustomerID = details.Order.CustomerID,
          TotalAmount = details.UnitPrice * details.Quantity 

      EntityTransaction

Question

Which method should you call on the ObjectContext, to ensure that the orders are added to the local data store?

Answer
    • ApplyCurrentValues

    • AttachTo

    • AddObject

Test details:

This Entity Framework interview test enables employers and recruiters to identify Entity Framework developers by evaluating their working skills and job readiness.

The online Entity Framework quiz contains MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, True or False.

Test Duration: 20 minutes 

  • 15 Application Oriented Questions

  • 05 Theory Questions 


The combination of application and theory questions helps to evaluate technical as well as practical skills of candidates

Test description:

Entity Framework Online Test helps recruiters & hiring managers to evaluate in-depth knowledge of candidate about Entity Framework used for Ado .NET before an interview.

Entity Framework is object-relational mapper which enables .Net developers with relational data using domain-specific objects. This framework allows us to automate database related activities. Entity framework is an enhancement to ADO.Net which helps in accessing and storing the data.

The online Entity Framework skills test specially designed to check application, practical skills of an Entity Framework developer – as per Industry Standards. Our Entity Framework quiz test is created and validated by Subject Matter Experts.

Entity Framework assessment test contains questions on following Topics:
 

  • Lazy Load

  • Entity Validation

  • Entity States

  • Entity Objects

  • Deleting an Entity

  • Entity Properties

  • Transactions and SQL

  • Entity Model

  • Entity Framework Designer 


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