C validating business rules

Of course you would put the business rules in a logical place - like behind some WCF services, so that they cannot be bypassed.

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Data validation rules can be defined and designed using any of various methodologies, and be deployed in any of various contexts.

Data validation rules may be defined, designed and deployed, for example: Definition and design contexts: Data that does not conform to these rules will negatively affect business process execution.

The Rule Engine supports cross-field validation, conditional validation and the rules are also Inheritable and Extensible .

Using the code Here you can watch the sample rule created, which is an Operator Test.

Data validation is the single most important component of any data-driven application.

Modern multi-tier web applications introduce a certain level of complexity when it comes to validation.

So changing the method name acknowledges these separate concepts and therefore we codify these separate concepts literally.

Code that must transliterate values to/from the database should be in some data layer of code independent of your business object.

Rules are defined using a fluent-interface (fluent validation) helper class, and not by decorating your existing objects with attributes, therefore de-coupling validation logic from data (or domain) classes.

Background It makes it easier for developers to define business rules on domain objects without coupling the domain object to the business rule.

This video is taken from Light Switch Developer Center published by Microsoft.

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