Answer:
The answer to this question is "map".
Explanation:
In the database map or mapping is a technique that identifying the relationship between the data fields or data. So the answer to this question is map and other options are not correct that can be described as:
- The link is used to add two databases.
- The export is used to send the whole database to another computer system.
- The merge is used to add two data fields, table but the type of and name of fields should be the same.
That's why the answer to this question is "map".