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C++ Class Member Functions

Like any other variable, a member function of a class operates on any object of the class to which it belongs and has access to all members of the class for that object. Read more

Functions in C++

Functions consist of instructions that take inputs, perform specific calculations, and produce outputs. Function declarations provide information about the name, return type, and parameters... Read more

Constructors and destructor of a class in C++

As a special member function of the class, a constructor is a function that initializes an object when it is created. In C++, the constructor is called automatically when an object... Read more

Access specifiers in C++

A key feature of object-oriented programming is data hiding, which prevents a program's functions from directly accessing the internal representation of a class. Within the class body,... Read more

Classes and Objects in C++

Object-oriented programming centers on the creation of classes, which provide a general framework for organizing computations in a program, where objects are merely instances of classes. Read more

Lambda functions in C++

The C++ language supports unnamed functions (lambda functions). In fact, such an object can be assigned to a variable, and the variable can then be invoked as if it were a function. Read more

DNS resource records

A DNS resource record (RR) is the data that maps a name to an IP address or other information, in areas that serve a structural purpose. This record, often abbreviated RR, is considered... Read more

DNS Name Resolution Mechanism

In order to enable Internet communication, DNS (Domain Name System) name resolution translates domain names into IP addresses. Here is an overview of the DNS name resolution mechanism: Read more

DNS Name Resolution

An essential element of Internet infrastructure, DNS serves as a hierarchical and distributed system that translates human-friendly domain names into machine-readable IP addresses... Read more

The most common Linux file systems

As opposed to formatting space, Linux filesystems are often referred to as "created file systems." A file system organizes raw storage space, such as a disk partition, to store data. Read more

Introduction to operating systems

Software that manages the hardware of a computer is known as an operating system. Additionally, it serves as an intermediary between the user and the computer hardware, providing a... Read more

Constraints in SQL

Constraints allow you to limit the type of data to insert into a table. These constraints can be specified when creating the table using the CREATE TABLE statement, or after creating... Read more

SQL data types

Data types represent a kind of data that can be stored in the database. The data type is the set of representable values. It is also known as an attribute that specifies a data type... Read more

SQL Operators

An operator is a reserved word or character used primarily in the WHERE clause of an SQL statement to perform operations, such as comparisons and arithmetic operations. These operators... Read more

Structure of a relational database

A table is a set of data relating to the same entity. It is structured in the form of a table. A table can also be called a relation (it contains the data which are in relation to... Read more

Introduction to database

A coherent computer system of information likely to be used simultaneously by several people. In fact, a database is a collection of files shared by several users. It is therefore... Read more

Introduction to SQL

SQL is a language for operating databases; it includes creating, deleting, extracting lines, modifying lines, etc. databases. SQL is an American National Standards Institute (ANSI)... Read more