December 2014
Intermediate to advanced
852 pages
17h 57m
English
Content preview from Joe Celko's SQL for Smarties, 5th Edition
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Chapter 13
Multiple Column Data Elements
Abstract
The concept of a data element being atomic or scalar is usually taken to mean that it is represented with a single column in a table. This is not always true.
Keywords
Vectors
Coordinates
Atomic
Scalar
Longitude
Latitude
HTM
IPv4 address
IPv6 address
ISO 4217 currency code
Hierarchical data elements
Social security numbers
Rational numbers
Vadim Tropashko
International System of Units
ISO 9407
The concept of a data element being atomic or scalar is usually taken to mean that it is represented with a single column in a table. This is not always true. A data element is atomic when it cannot be decomposed into independent, meaningful parts. Doing so would result in attribute splitting, a very ...
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