Technology Questions

As the name itself implies, it have to depend on other class only.

SELECT YEAR(GETDATE()) as "Year";

IDD is the Integrated Data Dictionary. It contains information about the elements, record types, sets, maps and dialogues within the database.

The different implementations of LINQ are:

      =>  LINQ to SQL - Refers to a component of.NET Framework version 3.5 that    provides a run-time infrastructure to manage relational data as objects.

      =>   LINQ to DataSet - Refers to a component that makes it easier and faster to query over data cached in a DataSet object.

      =>   LINQ to XML - Provides an in-memory XML programming interface.

      =>  LINQ to Objects - Refers to the use of LINQ queries with any IEnumerable or IEnumerable(T) collection directly, without the use of an intermediate LINQ provider or API, such as LINQ to SQL or LINQ to XML.

The correction of errors is more difficult than the detection. In error detection, checks only any error has occurred. In error correction, the exact number of bits that are corrupted and location in the message are known. The number of the errors and the size of the message are important factors.

A Field that DL/I uses to maintain the segments in the ascending order is called the key field

Most of the times compilers will do optimization to the code to speed up the program. For example in the below code,

int k = 15;
while( k == 15)

{
// Do something
}

compiler may think that value of 'k' is not getting changed in the program and replace it with 'while(true)', which will result in an infinite loop. In actual scenario, the value of 'k' may be getting updated from outside of the program.

Volatile keyword is used to tell compiler that the variable declared using 'volatile' may be used from outside the current scope, so that compiler won't apply any optimization. This matters only in case of multi-threaded applications.

In the above example if variable 'k' was declared using volatile, compiler will not optimize it. In shot, value of the volatile variables will be read from the memory location directly.