In the example given in the attached screen shot, author has used table name as [Origin Airports]:
Can I give any random table name XYZ ?
Also, the very first line states- field name will get qualified with their corresponding table names. Here I am finding the word "Corresponding" a little confusing. What does author wants to suggest by it ?.. As per my understanding, Suppose instead of [Origing Airports]: I used table name as [XYZPQR], then the resulting field names will be XYZPQR.Code and XYZPQR.Description.