MIS 0855 Lecture Notes - Lecture 3: Floating Point
23 May 2018
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Data, Information, Knowledge: Metadata
• Each piece of data can be described by metadata
• Metadata
o data about data
▪ a title, a description, a data type
o The data itself is a value
• Data Types
o Integer (whole numbers)
o Floating point (fractional/decimal values)
o Boolean (binary values)
o String (numeric and non-numeric characters)
o Date/Time (calendar date time)
• Why do we care about metadata?
o Documents what the data means
o Enables navigation
o Facilitates understanding
o Eliminates guesswork
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