Final answer:
Hybrid XML is structured hierarchically and linearly, contains mostly textual content, and sometimes adheres to a predefined schema. It uses a hierarchical structure for ease of navigation, and its textual nature ensures readability, with the application of schemas varying according to specific needs.
Step-by-step explanation:
The question relates to how Hybrid XML is structured, its content type and its schema adherence. To address this:
- How structured? Hybrid XML typically adopts a hierarchical structure, which allows for nested elements. Therefore the correct option is (a) Hierarchical and linear.
- Some parts mostly: The content within an XML document is largely textual, composed of readable text intermingled with markup code. Thus, the right answer would be (b) Textual.
- Predefined schema? XML documents may or may not conform to a predefined schema. While XML schemas are common, they are not mandatory for every XML document. Hence the appropriate option is (b) Sometimes.
Hybrid XML combines the features of XML with other data formats allowing for flexibility in how data is represented and validated. The hierarchical and linear structure of Hybrid XML makes it easy to navigate, and the textual content allows for both human and machine readability. The use of predefined schemas is situational depending on the requirements of the application or system in question.