Data structure is a way of organizing data in a computer system. It is used to store, organize, and manipulate data in a way that is efficient and easy to access. Data structures are used in many different areas of computing, including databases, operating systems, graphics, and networking. Major vendors for data structure technology include Oracle, Microsoft, IBM, and SAP. These vendors provide software and services that allow users to store, organize, and manipulate data in an efficient manner. Data structure technology is also used in artificial intelligence, machine learning, and natural language processing.