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Unstructured data does not readily fit into structured databases except as binary
large objects (BLOBs). Although unstructured data can have some structure??”for
example, e-mails have addressees, subjects, bodies, and so forth, and HTML Web
pages have a set of predefined tags??”the information is not stored in a way that
allows for easy manipulation by applications and computers.
Figure 4. Unstructured, semi-structured, and structured data
Ph.D. Dav d
B.Sc. M chael
M.Sc. R ck
Ph.D. Robert
B.Sc. John
Degree Age Name ID


John

B.Sc.


Dav d

Ph.D.

??¦.



John

B.Sc.


Dav d

Ph.D.

??¦.

The un vers ty has 00
students.
John??™s ID s number , he s
years old and already
holds a B.Sc. degree.
Dav d??™s ID s number , he s
years old and holds a
Ph.


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