Question

which database feature allows a database to automatically update when you update another file?

• linking
• exporting
• merging
• mapping

Explanation:

To determine the correct answer, we analyze each option:

• Linking: Linking in a database context typically refers to creating a connection where updating one related file (or data source) triggers an automatic update in the linked database. This matches the description of the feature that allows a database to update automatically when another file is updated.
• Exporting: Exporting is about moving data out of a database to another format or location, not about automatic updates based on another file's changes.
• Merging: Merging usually involves combining data from multiple sources into one, but it doesn't imply the automatic update relationship described (where one update triggers another's update).
• Mapping: Mapping is about defining relationships or correspondences between data elements, not about the automatic update mechanism.

Answer:

The correct option is the one labeled with "linking" (the first option in the list). Assuming the options are presented as:

• A. linking
• B. exporting
• C. merging
• D. mapping

Then the answer is: A. linking