
2.16 Chapter Summary 117
In this, admittedly long, chapter, I have introduced you to SQL's structured user-
defined types and shown you how to define such types and how to use them. I
discussed the use of these types primarily as values (you'll see their use as objects
in the very next chapter), but also called attention to the characteristics that such
types have in common with object-oriented technologies.
Among other material, I showed you how instances of structured types can be
compared with one another and how you can use SQL:1999's facilities to manip-
ulate instances of those types from your application code, without transferring ...