What capability do XML files provide in the context of database schemas?

XML files serve a crucial role in the context of database schemas by enabling the sharing and exchange of portions of those schemas. This is primarily due to XML's structured format, which facilitates the organization of data in a way that can be easily understood and processed by different systems.

In particular, XML allows for a standardized representation of a database schema, including the definitions of tables, fields, relationships, and more. This standardization is essential when different applications or systems need to interact with one another, as it ensures that everyone is using the same definitions and structures.

Moreover, because XML is text-based and human-readable, it allows developers and data administrators to easily manipulate and share schema information across diverse platforms and technologies. This capability is particularly useful in scenarios involving data integration, data migration, or in environments where multiple applications need to access the same data schema for interoperability.

In contrast, limiting data sharing to one user does not reflect the collaborative nature of XML. The option regarding combining multiple databases might suggest a more complex merging process, typically involving additional tools or methods. Lastly, while XML can be used in the context of backups and data storage, it does not inherently create backups automatically; this function relies on specific backup solutions or processes, not the XML format itself