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3 Tables are the central objects in a relational database structure,
4 because they hold your data. But they are not the only objects
5 that exist in a database. Many other kinds of objects can be
6 created to make the use and management of the data more efficient
7 or convenient. They are not discussed in this chapter, but we give
8 you a list here so that you are aware of what is possible:
9 </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
11 </p></li><li class="listitem"><p>
12 Functions, procedures, and operators
13 </p></li><li class="listitem"><p>
14 Data types and domains
15 </p></li><li class="listitem"><p>
16 Triggers and rewrite rules
17 </p></li></ul></div><p>
18 Detailed information on
19 these topics appears in <a class="xref" href="server-programming.html" title="Part V. Server Programming">Part V</a>.
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