névtérben

Névtérben is a Hungarian term that translates to "namespace" in English. In the context of computer science and programming, a namespace is a declarative region that provides a scope to the identifiers (names of types, functions, variables, etc.) inside it. Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries.

In programming languages like C++ and C#, namespaces are used to group related classes, interfaces, structures, and delegates. This helps in avoiding naming conflicts and makes the code easier to manage and understand. For example, in C++, you can define a namespace like this:

namespace MyNamespace {

class MyClass {

// class definition

};

}

In this example, MyClass is defined within the MyNamespace namespace. To use MyClass outside of MyNamespace, you would need to qualify it with the namespace name, like MyNamespace::MyClass.

In the context of databases, a namespace is a container for a set of schemas, which in turn contain tables. This is particularly relevant in PostgreSQL, where namespaces are used to avoid naming conflicts between schemas.

In summary, a namespace is a fundamental concept in programming and databases that helps in organizing code and preventing naming conflicts. It provides a way to group related elements and to create a unique context for identifiers.