What are the different types of database management systems ?
Database Management System is classified into four types: Hierarchical Database It is a tree like structure where the data is stored in form of a tree. In this type of…
Month: August 2022
76 posts
What is a Database ?
In computing, database is an organized collection of data stored which is accessed electronically. A database is usually controlled by Data Base Management Systems(DBMS). In a computer data is stored…
What is a primary key ?
In relational database primary key is a specific choice of minimal set of attributes that uniquely specify a relation. Primary key is a special realational database table column key that…
What is Normalization in SQL ?
It is a rule where larger tables are divided into smaller tables and they are linked using relationships. Process of organizing data in a data base is called as Normalization.…
What is SQL ?
SQL stands for Structured Query Language. It is used for interacting with databases. SQL is also known as standard query language which is used for maintaining relational database management systems(RDBMS).…
What are Virtual functions in C++ ?
Virtual function is a member function which is re-defined by a derived class and declared within a base class. When you refer to a derived class object using a reference…
What is exception handling in C++ ?
In C++ exception handling is a process to handle runtime errors. If we perform exception handling, so the normal flow of the application can be maintained even after runtime errors.…
What is namespace in C++ ?
In C++ namespace is a logical division of the code which is designed to stop the naming conflict. In C++ namespace defines the scope where the identifiers such as variables,…
What is Virtual Inheritance ?
During multiple inheritance Virtual Inheritance is used to remove the ambiguity of base class, when a derived class inherits the same base class via other classes in C++. For example,…
What is Template in C++ ?
In C++ a template is a simple and yet very powerful tool. We don’t need to write the same code for different data types because it is simple idea to…
What is Stack in C++ ?
Stack is an abstract data structure that contains a collection of elements. It implements the Last In First Out (LIFO) mechanism this element is pushed at the end is popped…
What is Pointers in C++ ?
Pointers are symbolic representation of addresses and it enables a program to simulate call-by-reference as well as to create and manipulate dynamic data structures. It defines a pointer variable and…
What is Overloading ?
If a single object behaves in many ways, it is known as overloading. It provides different versions of the same function while a single object has the same name. C++…
What is bool data in C++ ?
In C++ Boolean data type is defined using the bool keyword. This servers as an easy and convenient datatype for programmers to manage and write conditional statements using a boolean…
What is a Virtual Destructor ?
In C++ destructor is a member function of a class used to free the space occupied by or delete an object of the class that goes out of scope. In…
What is Iterator in C++ ?
An iterator is an object like a pointer that points to an element inside the container. Iterator can use to move through the contents of the container. We can access…
What is destructor in C++ ?
In C++ destructor is an instance member function which is invoked automatically whenever an object is going to be destroyed. A destructor meaning is the last function that is going…
What is Constructor in C++ ?
In C++ constructor is a special type of member function of a class which initializes objects of a class. Constructor is automatically called when object is created in C++. It…
What is C++ ?
It is an object-oriented programming language that can be used to create high-performance applications. In 1985 C++ was developed by Bjarne Stroustrup as an extension of c program language. It gives a…
What are the different types of polymorphism in C++ ?
Polymorphism means multiple forms that means having more than one function with the same name but with different functionalities. In C++ program there are 2 types of polymorphism, they are:…
