What’s in a name?
 
 
- The letter case used for attribute names is significant
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- plays an important part in the portability of DBI scripts
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- Used to signify who defined the meaning of that name and its values
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	 Case of name	Has a meaning defined by
 
 UPPER_CASE	Formal standards, e.g.,  X/Open, SQL92 etc (portable)
 MixedCase  	DBI API (portable), underscores are not used.
 lower_case	Driver specific, ‘private’ attributes (non-portable)
 
- Each driver has its own prefix for its private method and handle attributes
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- Ensures two drivers can’t define different meanings for the same attribute
 
 $sth->bind_param( 1, $value, { ora_type => 97, ix_type => 42 } );