Since version 1.11, NBi offers the opportunity to validate the data-types of the attributes of a relational database. This feature will be extended in the next releases.
The system-under-test must be define with a parent element named data-type. Within this element, you must specify an element column with the same information that for a test of structure (see previous chapters).
The unique valid assertion for a system-under-test data-type is the assertion is. This assertion expects a value equivalent to a data-type. The data-type could be vague or precise. To illustrate this, inside the element is you can define a value varchar or varchar(50). In case the result is a varchar(20), the first test will succeed but the last one will fail. This feature is also active for decimal or datetime types.