System Architecture 2-131
Data Pages and Data Row Storage
If the leading segment cannot fit into the current location of the row on the
home page, OnLine divides the page into whole-page segments again, this
time beginning with the leading end of the row. OnLine stores only a
forwarding pointer in the current page location. The rest of the data row is
stored in whole-page segments on one or more big-remainder pages.
Forward pointers are added to each page. The trailing portion of the row is
storedon a remainder page. Figure 2-31 illustrates storage of an updated row
that is longer than a whole page.