Technology Questions

There are three types of constructor in C++. They are Default constructor, Parameterized constructor, Copy constructor.

Row Level Trigger :
Row Level Trigger is fired each time row is affected by Insert, Update or Delete command. If statement doesn’t affect any row, no trigger action happens.

Statement Level Trigger :
This kind of trigger fires when a SQL statement affects the rows of the table. The trigger activates and performs its activity irrespective of number of rows affected due to SQL statement.

* JSON full form is JavaScript Object Notation.
* JSON is a lightweight text-based open standard designed for human-readable data interchange.
* It is derived from the JavaScript programming language for representing simple data structures and associative arrays, called objects.
* And JSON is language-independent, with parsers available for virtually every programming language.
* Uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python,php
* The JSON format is often used for serializing and transmitting structured data over a network connection.
* When third party data interchane(REST Services) then JSON may used there LIKE SHOP.
* It is primarily used to transmit data between a server and web application, serving as an alternative to XML.

It is an MVS message that indicates the presence of a duplicate catalogue in the database. This problem can be fixed by removing one of the entries and then adding a new one.

A binary tree with n nodes has exactly n+1 null nodes

If an error occurs in program, then only exception object is created otherwise, It will not be created. So it’s expensive to use in the program.

Use the LISTCAT command.