C# Exclusive Interview Questions and Answers (453) - Page 13

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Which template must you provide, in order to display data in a Repeater control

ItemTemplate.

What is SQL injection

A SQL injection attack attempts to compromise your database by creating
SQL commands that are executed instead of, or in addition to, the
commands that you have built into your application.

Can we add relations between the tables in dataset

Yes we can. It is done using DataRelation Object

can we enable or diasble the connection pool

By default Connection is enabled.If we explicitly want to enable or disable connection pooling we should set Pooling=true/false in your connection string.

Which is the top layer in the ADO.NET Entity Framework

Object Services
Explanation: Object Services is the top layer in the ADO.NET Entity Framework. This framework is made up of three layers: EDM (Entity Data
Model), Mapping and Source. Object Services falls under the EDM layer.

What happens internally if the statement cmd.Prepare() is executed in the Frontend

The sql statements will be compiled and a cache copy of the same will be
created so that next time the result can be given using the cache copy
for different parameters.

In Sql server the parameters must begin with ______________

NOTE: This is objective type question, Please click question title for correct answer.

In oracle the parameters must begin with ___________

NOTE: This is objective type question, Please click question title for correct answer.

______________ is a precompiled set of sql statement which are compiled in native form and stored in the backend.

NOTE: This is objective type question, Please click question title for correct answer.

Its recommended to use the __________ methods for fetching data from data reader

NOTE: This is objective type question, Please click question title for correct answer.

Is it compulsory that every opened connection must be closed

NOTE: This is objective type question, Please click question title for correct answer.

In an SQL statement, if the value of Varchar field is in single quotes, then it must be encolsed in _________

NOTE: This is objective type question, Please click question title for correct answer.

By default, How many data reader's can be opened on one connection object at a time

NOTE: This is objective type question, Please click question title for correct answer.

Can multiple catch blocks be executed

No,once the proper catch code fires off, the control is transferred to the
finally block (if there are any), and then whatever follows the finally
block.

What happens when an Exception is not handled by us in the Program (Even in the main function)

The CLR will handle it and and the program will terminate.

In .NET every exception is an object of type ____________

NOTE: This is objective type question, Please click question title for correct answer.

Whenever the integrity of an object is violated, _______________

NOTE: This is objective type question, Please click question title for correct answer.

Exception is a _________________ error

NOTE: This is objective type question, Please click question title for correct answer.

Can a variable declared in try block accessed in catch block

NOTE: This is objective type question, Please click question title for correct answer.

Can we use goto and return in finally block

NOTE: This is objective type question, Please click question title for correct answer.

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