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We have SRS (Software Requirement Specification) and HRS (Hardware Requirement Specification) documents in our company.
"Program testing can be used to show the presence of bugs, but never to show their absence."
<< please vote!! >></div>
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This is really a confused question. To "specify" something is to "identify (something) clearly and definitely". One can specify a requirement. One can specify a design. One can specify a test. If you want a good example of how things like this are named, research the specifications (and similar documents, like plans or standards) used by the U.S. Department of Defense, or the IEEE, or ISO.
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Requirements == needs
Specifications == deliverables
For every stated need, there is a stated deliverable.
A "Correspondence Matrix" shows the relationships.
Need Deliverable Design Code Test
Element Element Element
aN aD aDE aCE aTE
bN bD bDE bCE bTE
cN cD cDE cCE cTE
... ... ... ... ...
...in theory...
Cheers,
Mike Fidler
"I intend to live forever - so far, so good." Steven Wright
"I almost had a psychic girlfriend but she left me before we met." Also Steven Wright
"I'm addicted to placebos. I could quit, but it wouldn't matter." Steven Wright yet again.
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My experience has been that project creep is the great destroyer and ruins both requirements and specifications. 
A giraffe is a horse designed by a committee--- and executed by an Agile team....
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If you have project creep, then your project should be managed using "agile" technique. Ship the first version of the product when it does something concrete, then update continuously according to the whims of the paying customer.
This is one of the great distinctions between waterfall ("design everything up front") versus agile ("start simple and manage the mission creep") styles. With agile, your customer gets something useful sooner and is generally happier in the long run since new ideas and features can be added as part of the plan.
I'm retired. There's a nap for that...
- Harvey
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A Specification will generally encompass several Requirements.
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Just a thought, but might be better to think of the documents as checkpoints along a continuum of vague to detailed.
e.g.
bid->requirements->specification->design->tests->code.
Obviously a lot of effort has to go into properly creating and maintaining these documents which is why many organizations skip over or combine these steps. Or even call them by a different names for emphasis to a given audience.
How and why would be well beyond the scope of this reply there lots of different opinions out there on what is really important in the process.
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I have been using Visual Studio 2015 Community Edition for some time and am generally pleased with it. Yesterday I noticed Update 2 for it was available. So I set it to install with some other features (like Azure stuff).
I should have known what to expect when the upgrade took nearly 2 hours! Once it was done, I ran a brief test and it seems to work OK, although VS took a little longer to load. But then I checked my systems drive. I had 30 GB (that is thirty-giga-bytes) less free space. 
Fortunately I have lots of spare space on the drive. But 30GB for an upgrade!? Wow! VS is really getting more bloated every year.
Get me coffee and no one gets hurt!
modified 25-Apr-16 12:32pm.
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Check out the new and improved Xamarin stuff in there.
This space for rent
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Admittedly I don't know much about Xamarin, but I thought it existed to make you able to write .NET code everywhere? Android, MAC etc?
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That's pretty much it - and it's free inside VS 2015 Update 2. It's a big piece of software, so it pushes sizes up.
This space for rent
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Quote: It's a big piece of software, so it pushes sizes up
That would explain it. I suppose I better get meself an iPhone so I can start writing mobile apps. 
Get me coffee and no one gets hurt!
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And all I want to do, is to re-engineer a simple Windows WPF desktop app into an Apple desktop app. And for all its bloated size, VS2015 Update 2 does not seem able of this simple task! Xamarin is all about iOS and Android. It does not seem to have any capability to output anything for Apple desktops. Aaaaaaaaaaaaaargggggh!
Get me coffee and no one gets hurt!
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Quote: Check out the new and improved Xamarin stuff in there.
Improved? Really? My God, it must have been horrible before.
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For improved, read "Free" 
This space for rent
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Yep, same experience here...even after downloading and running from the iso, two installs on two different machines were 2+ hours each. I really haven't started using it yet, just a POC for an Android app using Xamarin, and another POC for a IVR/softphone app. I still use VS 2010 for most stuff. 
"Go forth into the source" - Neal Morse
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some of that is probably temporary stuff that can be deleted and it's probably also the update install download which can be deleted.
But, yeah, it's bigger.
#SupportHeForShe
Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson
You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
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Did you hear has been a huge breakthrough in Veterinary Cuddle Science? They found the Hugs Bison!
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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If the bison started to chase him, would he be a vet(e)ran then?
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I think you've been buffaloed.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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OG doesn't have the guts for that.
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I feel compelled to slap the person(s) that came up with that!
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment
"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst
"I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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