For the process by which different functional areas collaborate to design and develop a product that meets customer needs.

The question asks for the process by which different functional areas collaborate to design and develop a product that meets customer needs.

1. Software Engineering: This is a discipline focused on the design, development, and maintenance of software. It is too specific and does not encompass all product types or the general concept of cross-functional collaboration for any product.
2. Concurrent Engineering: This is a systematic approach that integrates the design and development of products and related processes, including manufacturing and support. It emphasizes parallel development activities and cross-functional teams working together from the outset to reduce development time and improve quality, directly addressing the collaboration of different functional areas to meet customer needs.
3. Knowledge Engineering: This field involves building knowledge-based systems and focuses on the acquisition, representation, and utilization of knowledge. It is not primarily a product development process.
4. Database: A database is an organized collection of data. It is a tool or a component, not a process for product design and development.

Therefore, Concurrent Engineering is the process that best fits the description.

The correct option is 2.
$\text{2. Concurrent Engineering}$