IT security organizations are spending too much on data protection for compliance but not enough on securing key trade secrets, the real crown jewels of corporate data.
Last summer I set up Change Data Capture for a client to track changes to their application database to apply those changes to their data warehouse. The client had some issues a short while back and felt they needed to increase the retention period from the default 3 days to 5 days. I ran this query to make that change: sp_cdc_change_job @job_type='cleanup', @retention=7200 The value 7200 represents the number of minutes in a period of 5 days. All was well, but they recently asked how they can verify...(read more)
In response to my answer yesterday about rotating an Image, Jamund told me to use .data() instead of .attr()
First I thought that he is right, but then I thought about a bigger context... Is it always better to use .data() instead of .attr()? I looked in some other posts like what-is-better-data-or-attr or jquery-data-vs-attrdata
The answers were not satisfactory for me...
So I moved on and edited the example by adding CSS. I thought it might be useful to make a different Style on each image if it rotates. My style was the following:
.rp[data-rotate="0"] {
border:10px solid #FF0000;
}
.rp[data-rotate="90"] {
border:10px solid #00FF00;
}
.rp[data-rotate="180"] {
border:10px solid #0000FF;
}
.rp[data-rotate="270"] {
border:10px solid #00FF00;
}
Because design and coding are often separated, it could be a nice feature to handle this in CSS instead of adding this functionality into JavaScript. Also in my case the data-rotate is like a special state which the image currently has. So in my opinion it make sense to represent it within the DOM.
I also thought this could be a case where it is much better to save with .attr() then with .data(). Never mentioned before in one of the posts I read.
But then i thought about performance. Which function is faster? I built my own test following:
<!DOCTYPE HTML>
<html>
<head>
<title>test</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">
function runfirst(dobj,dname){
console.log("runfirst "+dname);
console.time(dname+"-attr");
for(i=0;i<10000;i++){
dobj.attr("data-test","a"+i);
}
console.timeEnd(dname+"-attr");
console.time(dname+"-data");
for(i=0;i<10000;i++){
dobj.data("data-test","a"+i);
}
console.timeEnd(dname+"-data");
}
function runlast(dobj,dname){
console.log("runlast "+dname);
console.time(dname+"-data");
for(i=0;i<10000;i++){
dobj.data("data-test","a"+i);
}
console.timeEnd(dname+"-data");
console.time(dname+"-attr");
for(i=0;i<10000;i++){
dobj.attr("data-test","a"+i);
}
console.timeEnd(dname+"-attr");
}
$().ready(function() {
runfirst($("#rp4"),"#rp4");
runfirst($("#rp3"),"#rp3");
runlast($("#rp2"),"#rp2");
runlast($("#rp1"),"#rp1");
});
</script>
</head>
<body>
<div id="rp1">Testdiv 1</div>
<div id="rp2" data-test="1">Testdiv 2</div>
<div id="rp3">Testdiv 3</div>
<div id="rp4" data-test="1">Testdiv 4</div>
</body>
</html>
It should also show if there is a difference with a predefined data-test or not.
One result was this:
runfirst #rp4
#rp4-attr: 515ms
#rp4-data: 268ms
runfirst #rp3
#rp3-attr: 505ms
#rp3-data: 264ms
runlast #rp2
#rp2-data: 260ms
#rp2-attr: 521ms
runlast #rp1
#rp1-data: 284ms
#rp1-attr: 525ms
So the .attr() function did always need more time than the .data() function. This is an argument for .data() I thought. Because performance is always an argument!
Then I wanted to post my results here with some questions, and in the act of writing I compared with the questions Stack Overflow showed me (similar titles)
And true enough, there was one interesting post about performance
I read it and run their example. And now I am confused! This test showed that .data() is slower then .attr() !?!! Why is that so?
First I thought it is because of a different jQuery library so I edited it and saved the new one. But the result wasn't changing...
So now my questions to you:
Why are there some differences in the performance in these two examples?
Would you prefer to use data- HTML5 attributes instead of data, if it represents a state? Although it wouldn't be needed at the time of coding? Why - Why not?
Now depending on the performance:
Would performance be an argument for you using .attr() instead of data, if it shows that .attr() is better? Although data is meant to be used for .data()?
UPDATE 1:
I did see that without overhead .data() is much faster. Misinterpreted the data :) But I'm more interested in my second question. :)
Would you prefer to use data- HTML5 attributes instead of data, if it
represents a state? Although it wouldn't be needed at the time of
coding? Why - Why not?
Are there some other reasons you can think of, to use .attr() and not .data()? e.g. interoperability? because .data() is jquery style and HTML Attributes can be read by all...
UPDATE 2:
As we see from T.J Crowder's speed test in his answer attr is much faster then data! which is again confusing me :) But please! Performance is an argument, but not the highest! So give answers to my other questions please too!
Does it make any sense of declaring objects or refrences in a destructor of a class in C++?
I mean
class A
{
A()
{
}
~A()
{
//Declaring refrences or objects here //
}
}
I missed typed by scp command - didn't give target remote directory.
scp file root@remote-machine
It didn't say any errors and I don't know whether file is transferred or not . what happened here?
Is it possible to use ASP.NET Dynamic Data with SubSonic 3 in-place of Linq to SQL classes or the Entity Framework? MetaModel.RegisterContext() throws an exception if you use the context class that SubSonic generates. I thought I remembered coming across a SubSonic/Dynamic Data example back before SubSonic 3 was released but I can't find it now. Has anyone been able to get this to work?
I am looking for some well known algorithms that can be considered while handling very large amount of data.(Edit- By large amount of data I refer to records in a database excluding blobs). These algorithms if not in totality but in parts may be used in big web applications like Twitter, Last.fm , Amazon ,etc.
Specifically, I'm looking for names or links to such algorithms. My primary interest lies in developing a very deep understanding on working with large database records and writing efficient code for working with the same.
'Help, my database ate my disk drives!'. Many DBAs spend most of their time dealing with variations of the problem of database processes consuming too much disk space. This happens because of errors such as incorrect configurations for recovery models, data growth for large objects and queries that overtax TempDB resources. Rodney describes, with some feeling, the errors that can lead to this sort of crisis for the working DBA, and their solution.
I am not sure if I am going about this the best way, but I will try to explain what I am trying to do.
I have the following domain classes
class User {
static hasMany = [goals: Goal]
}
So each User has a list of Goal objects. I want to be able to take an instance of User and return 5 Users with the highest number of matching Goal objects (with the instance) in their goals list.
Can someone kindly explain how I might go about doing this?
I have a Business layer (BL) and a Data layer (DL). I have an object o with a child objects collection of Type C. I would like to provide a semantics like the following o.Children.Add("info"). In the BL I would like to have a static CLASS that all of business layer classes uses to get a reference to the current datalayer instance. Is there any issue with that or must I use the factory pattern to limit creation to A class in the BL that knows the DL instance.
I made a crystal report using c#.net, we can add only the objects that exist on the project that contains crystal report, is there any way to add .net objects from my business layer to my report and how?
I'm getting random crashes when creating an inferred mapping model (with Core Data's lightweight migration) within my application. By the way, I have to do it programmatically in my application while it is running.
This is how I create this model (after I have made proper currentModel and newModel objects, of course):
NSMappingModel *mappingModel = [NSMappingModel inferredMappingModelForSourceModel:currentModel destinationModel:newModel error:&error];
The problem is this: This method is crashing randomly. When it works, it works just fine without issues. But when it crashes, it crashes my application (instead of returning nil to signify that the method failed, as it should). By randomly, I mean that sometimes it happens and sometimes not. It is unpredictable.
Now, here is the deal: I'm running this method in another thread. More precisely, it is located inside a block that is passed via GCD to run on the global main queue. I need to do this for my UI to appear crisp to the user, i.e. so that I can display a progress indicator while the work is underway.
The strange thing seems to be that if I remove the GCD stuff and just let it run on the main thread, it seems to be working fine and never crashing. Thus, could it be because I'm running this on a different thread that this is crashing?
I somehow find that weird because I don't believe I'm breaking any Core Data rules regarding multi-threading. In particular, I'm not passing any managed objects around, and whenever I need access to the MOC, I create a new MOC, i.e. I'm not relying on any MOC (or for that matter: anything) that has been created earlier on the main thread. Besides the little MOC stuff that occurs, occurs after the mapping model creation method, i.e. after the point at which the app crashes, so it can't possibly be a cause of the crashes under consideration here.
All I'm doing is taking two MOMs and asking for a mapping model between them. That can't be wrong even under threading, now can it?
Any ideas on what could be going on?
One of my friends is facing an issue. He have a blog with wordpress - 'www.xyz.wordpress.com' and he want to convert it to 'www.xyz.com' by purchasing a domain name with wordpress.
In this case, what would happen to his existing RSS feeds once the blog is transferred from www.xyz.wordpress.com to www.xyz.com. Will the RSS Subscribers be automatically upgraded? He have not burnt my feeds using FeedBurner.
Oracle's Master Data Management suite has seen remarkable development progress in the past year and a half. Leveraging out-of-the-box integration to applications provided by Application Integration Architecture, the cost, risk and time it takes to implement an MDM solution has been cut in half. Oracle Applications are now 'MDM Aware', Data Quality tools have reached state-of-the-art status, and new hubs are coming on line. In this AppsCast, Pascal Laik, VP MDM Products discusses this progress, what it means for Oracle customers, and where we are going from here.
In my last question i asked how to best send a string from one view controller to another, both which were on a navigation stack:
http://stackoverflow.com/questions/2898860/pass-string-from-tableviewcontroller-to-viewcontroller-in-navigation-stack
However I just realised I can either pass the path to the file in the app's document's folder as the first (the table view) has already accessed the data in the file should I pass viewcontroller the data to the pushed VC?
Hello,
is it possible to specify that a NSMutableArray can only contain a certain type of objects.
For example, if I want to store only this kind of objects :
@interface MyObject : NSObject {
UInt8 value;
}
In order to be able to use the instance variable like this :
- (void)myMethod:(NSMutableArray *)myArray{
for (id myObject in myArray){
[self otherMethod:myObject.value];
}
}
because I'm getting this error :
request for member 'value' in something not a structure or union
Thank you for your help
Hi,
I have saw some time ago library where you can import your 3d objects and it will draw those out. You could also animate the objects.
The webpage itself was back and there were rotating gear at the corner...
Can anyone recall the name of the library?
Also you can mention if you know some other neat js libraries.
Thanks!
I have a data.frame:
df<-data.frame(a=c("x","x","y","y"),b=c(1,2,3,4))
> df
a b
1 x 1
2 x 2
3 y 3
4 y 4
What's the easiest way to print out each pair of values as a list of strings like this:
"x1", "x2", "y1", "y2"
Hi,
For an audit log, i need to know the differences between 2 objects.
Those objets may contains others objets, list, set of objects and so the differences needed maybe recursive if desired.
Is there a api using reflection (or other) already for that ?
Thanks in advance.
Regards
I am moving my blog to a new domain. I am trying to do this through .htaccess. While the redirect is okay - the output URL is 'ugly'
example in old domain .htaccess file:
redirect 301 /archives/2009/06/02/hello-world/ http://indiapoint.net/archives/2009/06/02/hello-world/
So if we click
http://www.i3pep.org/archives/2009/06/02/hello-world/
the redirect is to
http://indiapoint.net/archives/2009/06/02/hello-world/?year=2009&monthnum=06&day=02&name=hello-world&page=
Please suggest what should be done
thanks
Anup
Choosing a long term data storage medium isn';t as easy as you may think. You might imagine that the data could be burnt to CD, locked in a cupboard and that it would last forever however unfortunatel... [Author: Chris Holgate - Computers and Internet - April 02, 2010]
The popular PTS (Platform Technology Services) technical trainings for partners now include a workshop on Big Data.
First workshop will take place in Milan on July 10-12. (You can register by clicking the link below)
Oracle Big Data
Technical
Workshop
July
10-12,
2012: Cinisello Balsamo, Milan, Italy
For more info contact [email protected]
I have a ASP .NET load balanced application (webservice and website). It runs on SQL server. I need to be able to provide large files for download. However, because of the load balancing situation, the files are stored in the SQL database as opposed to the file system. BITS seems to be the best approach. I have full control of the client. However, i don't know how to configure BITS to read the file from the database. I know how to write the C# code for that, but i don't know how to get BITS to hook into it as opposed to reading the file from the file system.
Any ideas?
Hi all,
I have to implement chat application to mywebsite using php.
Chat has the features like audio, video, and file transefer.
so please give reply for this,
Thanks,