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An OverflowException can be avoided by a type of data validation known as?
overflow checking
Difference between data validation and data verification?
Data validation means to check for correctness, meaningfulness, and security of data that are input to the system. The simplest data validation verifies that the characters provided come from a valid set. For example, telephone numbers should include the digits and possibly the characters +, -, (, and ) (plus, minus, and brackets). A more sophisticated data validation routine would check to see the user had entered a valid country code, i.e., that the number of digits entered matched the convention for the country or area specified. Data validation might also check that all required fields are filled in before an online form was submitted. Data validation should also check that only data of an appropriate length is accepted. Failure to do so can make an application vulnerable to buffer overflow exploits. Validation should also prevent users from entering command strings in place of data. Data verification is a process that helps to determine whether data was accurately translated when data is transported from one source to another, is complete, and supports processes in the new system. During verification, there may be a need for a parallel run of both systems to identify areas of disparity and forestall erroneous data loss.
Data gathering methods?
Different ways to gather data include:SurveyTelemarketingWeb searchHistorical analysis
What are advantages of using JavaScript validations?
The main advantage to JavaScript validation is that it allows for instantaneous feedback for the user. User's are less likely to become annoyed if the form is capable of telling them that their data is invalid right away.Client-side validation also leads to less traffic. Rather than the server having to receive the entire HTML form POST, just to have it return an error, you can instead significantly cut down on the amount of data being sent to and from the server.It's important to note that even with JavaScript validation, server-side validation in a higher language must be done. JavaScript is client side, so it's possible to circumvent JavaScript validation with very little effort. If you rely solely on JavaScript validation, you will eventually receive bad (even potentially harmful) POSTS at the server. A web developer that doesn't do server-side checks has a very short career.
Is it true that wrapping up of data of different types into a single unit is known as encapsulation?
Not quite. Encapsulation means to combine data and the methods that work upon that data into a single unit (an object), such that access to both the data and methods is restricted in a controlled manner. Data-hiding is fundamental to encapsulation.
