Top 150+ Solved C# Programming MCQ Questions Answer

From 121 to 135 of 144

Q. A computer application that manages a database, in which different kinds of data arestored in separate tables, is known as a

a. Normal database system.

b. Network database system.

c. Standalone database system.

d. Relational database management system.

  • d. Relational database management system.

Q. Which of the following are examples of relational database management systems?

a. Adobe Publisher and Autocad

b. Delphi and Turbo C++

c. Microsoft Excel and Microsoft Project

d. Microsoft Access and SQL 2000

  • d. Microsoft Access and SQL 2000

Q. A unique field which distinguishs a record is known as a

a. Foreign key.

b. Primary key.

c. Tertiary key.

d. Secondary key.

  • d. Secondary key.

Q. In a database, a parent-child relationship is also known as a

a. Many-to-one relationship.

b. Many-to-many relationship.

c. One-to-many relationship.

d. One-to-one relationship.

  • c. One-to-many relationship.

Q. The field in the child table that links information to the parent table is known as the

a. Foreign key.

b. Primary key.

c. Tertiary key.

d. Secondary key.

  • a. Foreign key.

Q. ADO.NET is the data access component of Microsoft’s .NET framework that enables you to

a. connect your Visual Basic.NET applications to your company’s local area network.

b. connect your Visual Basic.NET applications to databases.

c. connect your PC to the Internet.

d. connect your local area network to the Internet.

  • b. connect your Visual Basic.NET applications to databases.

Q. ADO.NET was created for

a. Multiple users.

b. Single users.

c. Home network users.

d. Limited users.

  • a. Multiple users.

Q. Which of the following statements characterizes the relationship between a Visual Basic.NET program and a database record?

a. They are connected.

b. External databases cannot be accessed by Visual Basic.NET.

c. They are connected as long as the program is running.

d. They are not connecte

  • c. They are connected as long as the program is running.

Q. A copy of a database is called a

a. Duplicate database.

b. Dataset.

c. Table.

d. Database copy.

  • b. Dataset.

Q. When is the dataset connected to the database?

a. Whenever the program makes changes to a field or record

b. They are always connected

c. They are always disconnected

d. Whenever the program is running

  • a. Whenever the program makes changes to a field or record

Q. The connection to the database is established by

a. Using a local area network.

b. Installing a special software package.

c. Using managed providers.

d. Using a wide area network.

  • c. Using managed providers.

Q. The ADO.NET disconnected dataset

a. Provides a flexible way of working with database records.

b. Makes working with databases very complex.

c. Requires a large amount of memory space.

d. Is required when single users want to access a database.

  • a. Provides a flexible way of working with database records.

Q. XML provides a(n)

a. Difficult format for data storage.

b. Numeric based code for data storage.

c. Consistent format for data across applications, networks, and the Internet.

d. Limited format for data storage.

  • c. Consistent format for data across applications, networks, and the Internet.

Q. Why does Visual Studio.NET use XML as a data storage technology?

a. XML works best for the single PC user.

b. XML restricts the number of applications that can interface with Visual Basic.NET.

c. XML is optimized for sharing data across the Internet.

d. XML is easier to understand than Visual Basic.NET.

  • c. XML is optimized for sharing data across the Internet.

Q. Choose the correct statements about the LINQ?

a. The main concept behind the linq is query

b. linq make use of for loop to execute the query

c. It is not required that linq should make use of IEnumerable interface

d. None of the mentioned

  • a. The main concept behind the linq is query
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