Technology Questions

Controller object UIApplication is used without subclassing to manage the application event loop.

It coordinates other high-level app behaviors. 

It works along with the app delegate object which contains app-level logic.

include()
The include() function takes all the content in a specified file and includes it in the current file. If an error occurs, the include() function generates a warning, but the script will continue execution.

include_once()
File will not be included more than once. If we want to include a file once only and further calling of the file will be ignored then we have to use the PHP function include_once().

require()
The require() function is identical to include(), except that it handles errors differently. The require() generates a fatal error, and the script will stop.

require_once()
The required file is called only once when a page is open and further calling of the file will be ignored.

The purpose of garbage collection is to identify and discard those objects that are no longer needed by the application, in order for the resources to be reclaimed and reused.

One of the major component of ADO.NET is the DataSet object, which always remains disconnected from the database and reduces the load on the database.

A default is a value which will be used by a column, if no value is supplied to that column while inserting data.

Yes, IDENTITY and TIMESTAMP columns are free from the bounds of default.

new and delete operators are mainly used to allocate and deallocate
during runtime.