Answer:
b.Make every attempt to recover the data
Explanation:
If you have important data on your hard drive that is not backed up and your Windows installation is so corrupted you know that you must refresh the entire installation you should make every attempt to recover the data.
A link is a popular way to describe relationships in a relational database.
There are three types of relationships (links) between tables:
1. One-to-one <span>relationship , that allows only one record on each side of the relationship.
2. </span>One-to-many <span>relationship, that allows a single record in one table to be related to multiple records in another table.
3. </span>Many-to-many<span> relationship, in which many records in a table can link to many records in another table. F</span>
The union of two tables is basically the total of the two tables, so "or" questions would be my guess.