This course provides a comprehensive introduction to Document Type Definition (DTD), a critical concept in defining the structure and validating the content of XML documents. Learners will explore how DTD ensures consistency and structure by declaring elements, attributes, and entities, and by supporting both internal and external declarations. The course is structured into progressive lessons that guide learners from the fundamentals to advanced validation techniques, using real-world XML examples.

By the end of the course, learners will be able to: Identify the purpose of DTD in XML data handling. Explain the difference between internal and external DTDs. Describe key DTD components including elements and attributes. Differentiate between general and parameter entities. Apply DTD validation techniques to ensure structural correctness of XML documents. Interactive quizzes and graded assessments help reinforce understanding, while lesson-specific learning objectives ensure that each topic contributes to the learner’s ability to build structured, valid XML documents confidently.