Tags for questions related to validating data.

learn more… | top users | synonyms

5
votes
5answers
830 views

Is realtime validation of username good or bad?

I have a simple form for the user to sign up to my site; with email, username and password fields. We are now trying to implement an ajax validation so the user doesn't have to post the form to find ...
2
votes
2answers
96 views

Standard way of allowing general XML data

I'm writing a data gathering and reporting application that takes XML files as input, which will then be read, processed, and stored in a strongly-typed database. For example, an XML file for a "Job" ...
2
votes
3answers
507 views

Validating allowed characters or validating disallowed characters

I've always validated my user input based on a list of valid/allowed characters, rather than a list of invalid/disallowed characters (or simply no validation). It's just a habit I picked up, probably ...
1
vote
1answer
536 views

DDD and validation of aggregate root

Suppose an aggregate root : MailConfiguration (wrapping an AddressPart object). The AddressPart object is a simple immutable value object with some fields like senderAdress, recipentAddress (to make ...
2
votes
1answer
148 views

Ensure data entered by users adjusts to what actually is

This is more of a usability issue I'd say, looking of suggestions on it. I have a system that depends on the data entered by the users to be correct, as in the address exists, the name is correct, ...
0
votes
1answer
338 views

Verification & Validation books

So I need some help with Verification & Validation of software. So I know the definitions of both but ... I can't really find any real entry level books about the process from setting up the ...
7
votes
3answers
366 views

How to measure external quality of software

For my thesis, I am doing research into the characteristics of Behavior Driven Development (BDD). One of the BDD claims is that by specifying the requirements in a ubiquitous language together with ...
1
vote
1answer
118 views

validating APIs

We have a series of hardware and we have decided on a common API to be given to the customer for use. The customer will use this API in order to program the hardware. The API includes functions for ...
4
votes
2answers
109 views

Would it be hard to screen form submissions (e.g., comments) for non-words/non-sentences?

I've been thinking a lot lately about the need for better form security, and good ways to accomplish that. We currently use captcha codes to screen for bots, but that's annoying to users and may not ...
18
votes
4answers
761 views

Is validating HTML a thing of the past? [duplicate]

With us moving continually closer to HTML5 in terms of adoption, is writing HTML for validity something the web is rejecting, allowing us to straddle standards as the web continues to be in a ...
2
votes
2answers
3k views

MVC Validation with ModelState.isValid through a wizard

I'm working on a small educational project on MVC 3, and I'm facing a small problem, when attempting to handle validation in my application through a wizard. I tried to get benefit from the ability ...
1
vote
1answer
452 views

How much data validation is too much? [duplicate]

Possible Duplicate: Data input validation - Where? How much? I'm a new PHP developer and am into Powershell quite a bit but this question is language agnostic. I've been questioning my code ...
24
votes
3answers
7k views

Where we should put validation for domain model

I still looking best practice for domain model validation. Is that good to put the validation in constructor of domain model ? my domain model validation example as follows: public class Order { ...
4
votes
2answers
192 views

When and how much should we validate input when working with (C)AP storage?

Herein, we consider a server-client architecture. Suppose we keep the details flexible, but there's more than one layer of servers supporting our hypothetical service. The general question is "When ...
8
votes
2answers
4k views

Command handlers and DDD

I have an ASP.NET MVC application, that uses a query service to get data and a command service to send commands. My question is about the command part. If a request comes in, the command service uses ...
4
votes
2answers
426 views

What is the best way to validate the following data?

Lets say I receive an xml request that is sent to my web service and this request contains some data in it such as Hotel Room/Rate pairs (Room = Double Queen, Rate = 10%). The database has all of ...
3
votes
1answer
332 views

How can I use Windows Workflow for validation of a Silverlight application?

I want to use Windows Workflow to provide a validation service. The validation that will be provided may have multiple tiers with chaining and redirecting to other stages of validation. The ...
10
votes
6answers
2k views

How should I handle invalid user input?

I have been thinking about this issue for a while and I would be curious to have opinions from other developers. I tend to have a very defensive style of programming. My typical block or method looks ...
2
votes
3answers
194 views

Do you do any validation on directories when recursively deleting them?

How do you recursively delete paths of the data that your app created? The deleting process itself is trivial. The question is, do you do extra validation? And if so, what kind? From one point of ...
5
votes
5answers
964 views

In a web application backed by a database, how often should I validate data? [duplicate]

Possible Duplicate: Data input validation - Where? How much? Given that I have a web application with a user facing form that will store information in a database (that will be used by ...
5
votes
4answers
487 views

How far should I take email address validation when the cost of bad emails is high?

When it's more important to prevent typos than to cover 100% of all possible email addresses, what syntactic email validations do you do? Imagine this: You're with the local gas & electric ...
0
votes
1answer
80 views

Should I implement functionality for an xml file+schema?

I am working on a script to get data from excel spreadsheets to a database. The data is from surveys conducted by our office where the data comes in with very little formatting. At the moment, the ...
9
votes
4answers
772 views

How defensive should we be?

We've been running Pex over some code, and it has been showing some good things (well bad things, but showing them before it gets to production!). However, one of the nice things about Pex is that it ...
20
votes
5answers
4k views

Data input validation - Where? How much? [closed]

Data input validation always was quite an internal struggle to me. On the verge of adding a real security framework and code to our legacy application rewrite project (which so far pretty much keeps ...
8
votes
5answers
8k views

What Special characters should one allow for a Phone Number?

So I am designing a webpage which will be used for global users, includes users from Canada, US, India, UK etc. I need to apply validations for this phone number field, but I'm not sure the best way ...
10
votes
2answers
4k views

Has anyone successfully used Windows Workflow for a Business Rules/Validation engine?

I was wondering if anyone has successfully used Windows Workflow Foundation for a BusinessRules/Validation engine, or if you know of some sample code or articles about this. If you have used it ...
20
votes
10answers
8k views

Should a method validate its parameters? [duplicate]

Say you are designing a Square root method sqrt. Do you prefer to validate the parameter passed is not a negative number or do you leave it up to the caller to make sure the param passed is valid. How ...
30
votes
21answers
7k views

Is Software Testing Really Needed?

I'm a student working on my B.E(CS) and my question is the following: Is testing in the software field needed? If we create a software with great care, then why should we test? After testing can ...
3
votes
2answers
797 views

Best practice for validating XML messages

Two systems are communicating via XML messages on a message queue and any received message must be validated for structure, content and business logic before being processed. An XML schema offers ...
4
votes
4answers
459 views

Should validation messages contain punctuation? [closed]

When building an application should all validation messages have punctuation?
9
votes
5answers
4k views

Do you use both Client-side and Server-side validation techniques?

Do you use both Client-side and Server-side validation techniques side by side when validating input from a user, e.g. via a contact form? If so, is it really necessary? Are you over engineering?
22
votes
10answers
14k views

Constructor parameter validation in C# - Best practices

What is the best practice for constructor parameter validation? Suppose a simple bit of C#: public class MyClass { public MyClass(string text) { if (String.IsNullOrEmpty(text)) ...
19
votes
9answers
2k views

Is an 'if password == XXXXXXX' enough for minimum security?

If I create a login for an app that has middle to low security risk (in other words, its not a banking app or anything), is it acceptable for me to verify a password entered by the user by just saying ...
5
votes
8answers
1k views

Data validation best practices: how can I better construct user feedback?

Data validation, whether it be domain object, form, or any other type of input validation, could theoretically be part of any development effort, no matter its size or complexity. I sometimes find ...
1
vote
3answers
465 views

Textarea validation

I'm interested to hear what characters people permit in the various common fields of input forms (barring e-mail...) For example: Textarea/Messages: do you allow completely free text, or restrict ...
87
votes
25answers
19k views

How far should one take e-mail address validation?

I'm wondering how far people should take the validation of e-mail address. My field is primarily web-development, but this applies anywhere. I've seen a few approaches: simply checking if there is ...