Which component is proprietary to Windows-based operating systems and is used to update database files?

The correct answer is SQL Server Integration Services (SSIS). SSIS is a component of the Microsoft SQL Server database management system and is specifically designed for data integration and workflow applications. It excels in data transformation and can be used to update database files effectively. Being proprietary to Windows-based operating systems, it utilizes the capabilities of Windows for its operations, which includes managing and updating data in SQL Server databases.

In contrast, Open Database Connectivity (ODBC) is a standard API that allows applications to communicate with databases regardless of their underlying platform, enabling interoperability across different systems but is not exclusive to Windows. Java Database Connectivity (JDBC) is an API specifically designed for Java applications to connect to databases, again not being limited or proprietary to Windows. Database Query Language (DQL) refers generally to a set of commands used for querying databases, but it is not a specific component or technology and does not pertain strictly to Windows-based systems. Hence, SSIS stands out as the component that is exclusive to Windows and tailored for updating database files.