dbta

Missing Information and the Relational Null

One of the trickiest aspects of relational database management can be dealing with missing information. The standard method of representing missing information is to set the “value” to null. A null ...
TechRepublic

Learn the differences between Is Null and IsNull() in Access

Learn the differences between Is Null and IsNull() in Access Your email has been sent How many null values exist? What is the difference between a null value and a blank entry? This article answers ...
Visual Studio Magazine

Using the not_null Template for Pointers That Must Never Be Null

It's time to meet the Guideline Support Library, a small helper library that provides some missing functionality. I'll show you how to ensure a pointer is never null, which will make your applications ...
Ars Technica

[C#] Simple way to test if returned value is not NULL and then copy its value?

So I have a method:<BR><BR><pre class="ip-ubbcode-code-pre">int Foo()</pre><BR><BR>It either returns a value if successful or NULL if not. If I'm not mistaken, if I ...
Nature

Universal pleiotropy is not a valid null hypothesis: reply to Hill and Zhang

You have full access to this article via your institution. We believe that an experimentally testable null hypothesis should be 'no gene effect'. An effect is proved only when this null hypothesis is ...