Specifically its operation doesn’t cascade to the associated instances; you must handle them by yourself.

Figure 8 shows that the left outer join operations are cascaded if a rule uses more than one reference column.

But the cartoonist is making a pun here, as bush league is also "Bush league", second-rate because it comes from people with minds like that of President George W. Bush.

In reality, it's up to you to decide whether you want your classes to maintain strict referential integrity (in other words, have all deletes cascade) or to allow a looser relationship.

But there is something that you can do now to stop the cascading events that occur in the body and lead to disease. You can change your diet and begin safeguarding your health for the future.