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Data Resource Integration: Understanding and Resolving a Disparate Data Resource by Michael H. Brackett

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Appendix A DATA INTEGRITY RULE EXAMPLES

Appendix A contains examples of data integrity rules to show the types and formats of the various data integrity rules. For a detailed description of data integrity rules, refer to Data Resource Simplexity.

Data Integrity Rule Symbols

Mathematical symbols:

+ addition

- subtraction

* multiplication

/ division

** exponentiation

= equals

Logical symbols:

< less than

> greater than

<= less than or equal to

>= greater than or equal to

= equal to

<> not equal to

>< must be equal to, or must be

^ hierarchy (parent – child)

& logical and

| logical or

|| concatenated with

:: valid for

~ relationship

<< comes from, translates from

>> goes to, translates to

Blank means a blank data value

‘ ‘ means a blank data value ...

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