rougail/docs/structured_data/data_integrity.rst

Data integrity
===============

Data integrity refers to the fact that data must be reliable and accurate throughout its lifecycle.

This means that the value must be:

- of high quality
- appropriate to the overall context

Isolated variable
-----------------

Data quality
~~~~~~~~~~~~

The values of the variables must be individually of good quality.

.. toctree::
   :titlesonly:
   
   typing
   variable_validation

Access control
~~~~~~~~~~~~~~

.. toctree::
   :titlesonly:
   
   mode
   variable_properties

Overall coherence
-----------------

An isolated variable can be considered to be of quality but become inconsistent depending on the context.

.. index:: consistency

Consistency
~~~~~~~~~~~

For example, if a minimum value and then a maximum value are requested, the minimum must be lesser than the maximum.

Overall consistency is initially managed by personalized validators which will validate the value of a variable in relation to others.

Context access control
~~~~~~~~~~~~~~~~~~~~~~

Access control occurs as soon as an attempt is made to access a variable.

Remember, we talked about the :ref:`hidden variable <hidden>` and :ref:`disabled variable <disabled>` variables.

These properties become fully meaningful when managing overall consistency.

Why ask for the domain name of a service if we haven't activated that service just before?