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But quote-enclosed reference names may not include a less-than sign (<) or a double straight quote symbol ("), which may, however, be included by escaping as < and " respectively. The quote marks must be the standard, straight, double quotation marks ( " ); curly or other quotes will be parsed as part of the reference name.
Please reference this page and the page where you have the problem so we can understand your issues. For basic information on the footnotes system, see Referencing for beginners ; for advanced help, see Footnotes .
Wikipedia pages often cite reliable secondary sources that vet data from primary sources. If the information on another Wikipedia page (which you want to cite as the source) has a primary or secondary source, you ought be able to cite that primary or secondary source and eliminate the middleman (or "middle-page" in this case).
For example, if the data source is moved to a different server, the property for the server can be changed. The benefit is that because the data source's properties can be changed, any code accessing that data source does not need to be changed. A driver that is accessed via a DataSource object does not register itself with the DriverManager.
In this case, the source actor is asked to verify that this data is what they would really want to enter, in the light of a suggestion to the contrary. Here, the check step suggests an alternative (e.g., a check of a mailing address returns a different way of formatting that address or suggests a different address altogether).
The named reference $1 was invoked but never defined (see the help page). displays for both references. This can be very confusing, as the order of references in the list may not match the order used in the content. If {} is used and the |refs= parameter is missing or malformed. If a named reference is invoked within the reference list markup:
A list-defined reference has an invalid name. Ensure the footnote name is formatted properly. More than one use of {} or #tag:ref within list defined references. You can only use {} or #tag:ref once as a list-defined reference.
Referential integrity is a property of data stating that all its references are valid. In the context of relational databases , it requires that if a value of one attribute (column) of a relation (table) references a value of another attribute (either in the same or a different relation), then the referenced value must exist.