If I can remember correctly, I implemented the regular
expression validation of Dates(like Feb28 etc) in the schemas(around 3 years
back). There are bunch of code examples across the web for this. So, we can do
validate the dates or for a given set of values- enumerated data (like days of a
week) etc in the Regular expressions.
The date format decides the validation regular expression
expression(ex: Regular expression for dd-MMM-yyyy is diff from
Regular expressions may work to some degree in this case, but they won't
provide the level of validation for units that you need. For example, a regular
expression can be used to define the format for a date, but it cannot validate
that a date of (for example) February 30 is not present, as it cannot validate
the combination of month and year in this case.
So Len's example of an attribute for units, with an enumerated list of
valid values, is the best approach.
Booz Allen Hamilton
700 13th St. NW, Suite 1100
Washington, DC 20005
You can have this in Schema.
Define simple type attribute and have a regular expression
as the constraint on that simple type attribute according to your data+units
I am creating a xml schema where I
have to making a ‘attribute’ but can a attribute hold a value and
My example is FlowRate, let’s the
value and unit could be 100 GPM.
Can I have just one attribute for
100 and GPM both. Some times it might be 80 cFPS.
So can a attribute hold both or do I
need element here.