Which format is considered outdated and has been replaced by modern GIS data structures?

The coverage format is considered outdated in the context of modern GIS data structures. Originally developed by ESRI for use in its ArcInfo software, coverage was one of the first methods for storing vector data. It included features such as topology and attribute information but had limitations, including a complex file structure and difficulties in data sharing and interoperability between different systems and software.

In contrast, modern GIS practices favor more versatile and flexible data formats. While raster and SHP (Shapefile) formats are still widely used, they have evolved and can seamlessly integrate with current technologies. The GeoJSON format, specifically designed for web applications and data interchange, represents a contemporary data structure that is easily handled by most modern GIS tools and platforms.

The coverage's complexity and lack of compatibility with newer systems have diminished its utility in contemporary GIS applications, making it less favored compared to more agile and user-friendly formats that enhance data sharing and processing in a multi-platform environment.