• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint

Step 2

Form the table:

projSName(R)

That is, project the table R onto the SName column, giving the SUPPLIERS that do not supply all types of wood, as shown in Table B-5.

Table B-5. projSName(R)

SName

Austin Hardwoods

West Lumber

Fred’s Woods


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint