In this article, we will try to understand the difference between Verification and Validation in Flutter. When building any technology-based solution or service, we often authenticate our systems. We mostly tend to apply more resources toward the security of the service we are building. Building things nowadays requires a lot of debugging, validation, and verification of security, credentials, and other parts of non-user-related services.

 

Are Verification and Validation two different things in Flutter ?

Also Read: Understanding Deep Links in Flutter [Explained with examples]

Well, people other than the service constructor or the developer always think that verification of services and validations are two of the same kind, but wait! Most people fall into the trap of using validation in place of verification, and vice versa. But let me tell you that, from the perspective of flutter, verification and validation are two different terms.

Now, let's debug where the terms are actually different and how they are different from different perspectives.

 

What is Verification in Flutter ?

Verification in Flutter is the same as it is in the world of software design and testing. It is a process that checks whether the software or technology is built according to the software requirements or not. Verification also checks and verifies the pattern that is used when building software. Verification is mainly done by checking the below parameters in all domains:-

• Requirements from the perspective of the Business Model
• Requirements from the perspective of the Customer
• Requirements according to the type of software and its usage
• Requirements from the ground and top-level designs of the software

The main goal of verification during software development, whether directly or indirectly, is to maintain the software's quality from all angles, including reviews, walkthroughs, and testing.

 

Should we always use Verification ?

Actually, it depends on the basis of the project and the main schema, as well as where and when to implement them. But, basically, verification should be used only if there is an emerging use case for it in sectors such as security, privacy, and other things that should maintain your software rules.

Verification should be performed before implementing a feature or an update to your software. Well, there are many kinds of verification done nowadays that include unit testing, integration testing, and widget testing in the case of Flutter. In a nutshell, unit testing is a testing procedure in which internal implementation, functions, and packages are checked and verified.

Similar to it Integration testing is a process of testing that includes testing based on module structure, such as the login module of an app. Similar to this, widget testing involves testing UI widgets based on various scenarios that are implemented on various screen sizes.

 

Advantages of Verification in Software

There are certainly many situations where verification must be used, but the following example illustrates how verification frequently plays a crucial role and benefits the department:

• When verification is implemented in software, many unknown bugs and cases in test cases can be detected during the verification procedure. So, it may give us our bugs before the customer gets them.
• If verification isn’t implemented, then it will take a lot of time to debug with teams to find cases, which may result in the product failing.
• Verification matches verify and handle customer demands, along with other needs from the perspective of business. It also gives the software a chance to run at the best conditions with flawless moves and functions.

 

What is Validation in Flutter ?

Validation and verification may sound similar on the surface, but they are not the same thing. We have recently seen from the above what "verification" means and how it plays an important role while building software. But does validation matter?

As you may already be aware, validation is the process of determining whether the software satisfies or fits the intended use from the perspectives of the business and the customer. Verification, on the other hand, is the process of confirming the results of the software.

Well, this may sound confusing to you currently, so let us have an example. When opening an app, we mostly log in to continue, which is in the module structure as per the business model of the app. Therefore, the app is verified if it produces the same login result as what the company intended. But to validate the data inside the login form, we use the email and password combination validation.

Similarly to that, for example, If a website asks us for some documents to continue, if it is fulfilled by the verification part, the document module should be there. But validating documents is another thing, which validates whether the user's documents are originals, duplicates, or screenshots.

 

A great example of Validation in Flutter is Form validation

Validating forms is a great example when it comes to the domain of website or app building. Well, currently, you can see that a lot of websites and apps have a login module or subscription module that checks and validates the current email address entered. Well, this validation technique helps both ends, i.e., the user and the business. The user gets to know that the email was mistakenly entered wrong, and the business benefits by not getting any false data in the database.

Well, currently, from the perspective of building an app with Flutter, there are many packages that mainly handle the validation of forms, and I would say that they are great tools for a beginner. Form_bloc, from the bloc library used for state management in Flutter, is a great and famous package to manage and validate form fields.

 

Difference between Validation and Verification 

You might not notice much of a difference right now. But there are cases where the difference between these two matters.

Validation	Verification
Validation is a process, which includes validation and testing of the original/final product	Verification is a process that checks the design, code, and program to ensure that they meet the needs of the business or end user.
Validation includes code execution	Verification does not include code execution
Validation includes testing such as whitebox, blackbox, and non-functional testing	Verification includes reviews, walkthroughs, and inspections
Validation check whether the software meets the requirements	Verification checks and confirms whether the software confirms a specification or not
Validation is accomplished by collaborating with the testing and quality assurance teams.	Developers or quality assurance teams are primarily responsible for verification.
Validation is a post-process for Software	Verification is the pre-process for software
The validation process finds the bugs and edge cases that, verification might have missed in the development cycle.	The verification process finds bugs and edge cases in the development cycle.

 

Conclusion

Well, when building software, you will always come across the terms "verification" and "validation." The software cycle's two most important terms need to be handled separately and differently because of their importance. I hope this article helped you understand the true meaning of the two, as well as their benefits and applications.