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XML is Semi-structured Data
•Attributes
with different types in different objects
•Nested
collections (no 1NF)
•Heterogeneous
collections:
–<db> contains both
<book>s and <publisher>s
<person> <name> <first>
John </first>
<last> Smith </last>
</name>
<phone>1234</phone>
</person>
ß structured name !