What Is Composite Data Type Example?


Angela Bailey

Composite data types are an essential concept in programming that allow us to group multiple values together into a single entity. These types are known as composite because they combine different data types to create a more complex structure. In this article, we will explore what composite data types are and provide an example to help you understand their practical use.

What Are Composite Data Types?

Composite data types, also referred to as aggregate data types, are used to store multiple pieces of related information together. They enable programmers to create custom structures that can hold different kinds of data in a single variable. This is particularly useful when dealing with complex datasets or when we need to organize different pieces of information into a cohesive unit.

Within most programming languages, composite data types come in various forms, such as arrays, structures, records, classes, or objects. Each type has its own unique characteristics and usage patterns.

An Example: Employee Records

To illustrate the concept of composite data types, let’s consider an example of managing employee records for a company. Each employee record may contain multiple pieces of information like their name, age, job title, and salary.

To represent this information using composite data types in HTML code or any other programming language with similar concepts, we can define a structure or object that encapsulates all the relevant attributes.

Here’s an example using JavaScript:

  // Define the structure for an employee record
  function EmployeeRecord(name, age, jobTitle, salary) {
    this.name = name;
    this.age = age;
    this.jobTitle = jobTitle;
    this.salary = salary;

  // Create an instance of the EmployeeRecord
  var employee1 = new EmployeeRecord("John Doe", 30, "Software Engineer", 60000);

  // Accessing the attributes of the employee record
  console.log(employee1.name); // Output: "John Doe"
  console.age); // Output: 30
  console.jobTitle); // Output: "Software Engineer"
  console.salary); // Output: 60000

In the above example, we define a structure called `EmployeeRecord` that has four attributes – `name`, `age`, `jobTitle`, and `salary`. We then create an instance of this structure using the `new` keyword and assign values to each attribute.

We can access individual attributes of the employee record using dot notation. For example, `employee1.name` gives us the value `”John Doe”`. This way, we can easily store and retrieve all related information about an employee in a single variable.

The Power of Composite Data Types

Composite data types offer several benefits in programming. By grouping related data together, they provide a more organized and structured approach to handling complex information. They make code more readable and maintainable as well.

In addition to organizing data, composite data types enable us to perform operations on collections of elements. For example, arrays allow us to store multiple values of the same type, and we can iterate over them to perform calculations or manipulations.

Moreover, composite data types facilitate code reusability. Once we define a structure or class, we can create multiple instances of it with different values. This saves time and effort by eliminating the need to rewrite the same code for each instance.


Composite data types are an essential concept in programming that allows us to group related information together. They provide a way to create custom structures that hold different kinds of data in a single variable. By organizing data and enabling operations on collections, composite data types make code more readable, maintainable, and reusable.

Understanding composite data types is crucial for any programmer looking to build complex systems or handle large datasets efficiently. With the example provided in this article, you should now have a solid foundation for working with composite data types in your own projects.

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