70-483 Exam Dumps | You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must

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You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must meet the following requirements:
* Be read-only.
* Be able to use the data before the entire data set is retrieved.
* Minimize the amount of system overhead and the amount of memory usage.
Which type of object should you use in the method?

A. DbDataReader

B. DataContext

C. unTyped DataSet

D. DbDataAdapter

Correct Answer: A

Explanation
DbDataReader Class
Reads a forward-only stream of rows from a data source.
Reference: DbDataReader Class
https://msdn.microsoft.com/en-us/library/system.data.common.dbdatareader(v=vs.110).aspx

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