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what is metadata means ?

 
Alvin chew
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hi, can anyone explain what is metadata means ? tq
 
fred rosenberger
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I'm not positive, but I think it's data about your data. Say you've done some surveys. you have a bunch of people answering a question. Their answers are your data.
but when you start saying "i have 500 responses, and a 95% certainty that my results are accurate to within +/-3% accuracy...
THOSE numbers are meta-data.
 
Dirk Schreckmann
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fred's explanation is a good one.
Metadata is descriptive information about information.
 
Alvin chew
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if metadata of database ? then ?
 
Jeroen Wenting
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the metadata is the data that defines your data.
In the context of a database it would be the table definitions and things like that.
 
Dirk Schreckmann
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The term metadata is used to label information that describes information in the database world, as well as in other situations.
Note that Java 1.5 is scheduled to include a metadata facility to allow classes, interfaces, fields, and methods to be marked as having particular attributes.
 
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