Final answer:
Multimedia Database is the database structure that works effectively with complex data types such as video clips, audio segments, and other subsets of Web pages.
Step-by-step explanation:
The database structure that works effectively with complex data types such as video clips, audio segments, and other subsets of Web pages, and is considered one of the key technologies of Web-based applications, is the Multimedia Database. Multimedia databases are designed specifically to handle multimedia data, including audio, video, images, and other types of media. They are optimized for storing and retrieving large multimedia files, and offer features such as content-based retrieval and efficient indexing mechanisms.