Gegevenstypen

Gegevenstypen, also known as data types, are fundamental concepts in computer programming and databases. They define the kind of value a variable can hold and the operations that can be performed on it. Different programming languages and database systems have their own sets of predefined data types, but they generally fall into several common categories.

Numeric data types are used to store numbers. These can be integers, which are whole numbers, or floating-point numbers, which include decimal points. Examples include integers like 10, -5, and 1000, and floating-point numbers like 3.14, -2.5, and 1.23e-4.

Text data types, also known as string data types, are used to store sequences of characters. This includes letters, numbers, symbols, and spaces. Examples are "Hello, world!", "123 Main Street", and "@#$!".

Boolean data types represent logical values, typically either true or false. These are often used in conditional statements and logical operations within programs.

Date and time data types are used to store temporal information, such as specific dates, times, or combinations of both.

There are also more complex or structured data types, such as arrays, which store collections of similar data items, and objects, which can store a combination of different data types and associated behaviors. The choice of data type impacts how data is stored, processed, and validated, directly affecting program efficiency and data integrity.