Technology Questions

Q:

What is copy constructor?

Answer


Copy constructor is a constructor function with the same name as the class and used to make deep copy of objects.

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Subject: C++

0 3036
Q:

Can a source file contain more than one class declaration?

Answer Yes a single source file can contain any number of Class declarations but only one of the class can be declared as public.
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Subject: Java

0 3033
Q:

What is LINQ?

Answer

Language Integrated Query (LINQ) adds the ability to query objects using .NET languages. The LINQ to SQL object/relational mapping (O/RM) framework provides the following basic features:


- Tools to create classes (usually called entities) mapped to database tables


- Compatibility with LINQ's standard query operations


- The DataContext class, with features such as entity record monitoring, automatic SQL statement generation, record concurrency detection, and much more

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Subject: SQL

0 3032
Q:

How can we find the number of rows in a result set using PHP?

Answer

$result = mysql_query($sql, $db_link);
$num_rows = mysql_num_rows($result);
echo "$num_rows rows found";

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Subject: PHP

0 3030
Q:

What is the difference between processes and threads ?

Answer

- A process is an execution of a program, while a Thread is a single execution sequence within a process.


- A process can contain multiple threads. A Thread is sometimes called a lightweight process.

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Subject: Java

0 3030
Q:

What is SQL Server Agent?

Answer

SQL Server agent plays an important role in the day-to-day tasks of a database administrator (DBA). Its purpose is to ease the implementation of tasks for the DBA, with its full- function scheduling engine, which allows you to schedule your own jobs and scripts.

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Subject: SQL

0 3027
Q:

Will comparison of string "10" and integer 11 work in PHP?

Answer Yes, internally PHP will cast everything to the integer type, so numbers 10 and 11 will be compared.
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Subject: PHP

1 3023
Q:

What is Analysis service repository?

Answer

Every Analysis server has a repository to store metadata for the objects like cubes, data sources etc. It’s by default stored in a MS Access database which can be also migrated to a SQL Server database.

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Subject: SQL

0 3020