Final answer:
Document-Centric XML is structured hierarchically and can contain large amounts of tags, schemas, data, and attributes. XML documents can have nested elements and other structural features.
Step-by-step explanation:
Document-Centric XML is structured hierarchically, meaning that elements are organized in a hierarchical manner.
Large amounts of XML can contain tags, schemas, data, and attributes.
XML documents may have nested elements, arrays, object-oriented structures, or encoded data.
For example, consider a bookstore XML document with nested elements such as 'book' and 'author', and attributes such as 'id'. This structure enables organizing the data in a hierarchical manner.