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• Do any database "styles" use discrete files for their tables?

  - by Brad

  I've been talking to some people at work who believe some versions of a database store their data in discrete tables. That is to say you might open up a folder and see one file for each table in the database then several other supporting files. They do not have a lot of experience with databases but I have only been working with them for a little over a half year so I am not a canonical source of info either. I've been touting the benefits of SQL Server over Access (and before this, Access over Excel. Great strides have been made :) ). But, other people were of the impression that the/one of the the benefit(s) of using SQL Server over Access was that all the data was not consolidated down into one file. Yet, SQL Server packs everything into a single .mdf file (plus the log file). My question is, is there an RDBMS which holds it's data in multiple discrete files instead of one master file? And if the answer is yes, why do it one way over the other?

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• How to run just one application over ethernet while others on wifi

  - by db42

  I normally connect my laptop via wifi. However, I would like to use synergy to share my workplace desktop machine with my laptop. But the problem is that my desktop machine doesn't have wireless support. So, I have no other options except using ethernet to connect them. My first question is - Is it possible to use ethernet for synergy and keep using wifi for all other application. If the answer is yes, can somebody please guide me how to achieve this. Thanks,

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• downgrading a ubuntu 10.04 LTS virtual server

  - by castigli

  I am downgrading an existing ubuntu 10.04 LTS Virtual Server to one with less memory and a smaller drive ( from 80GB to 40GB ). My hoster ( hetzner.de ) does not give me the possibility of doing an inplace downgrade, so I have to create a new server. What is the best way to make an image of the first system and "apply it" to the new one ? I know there other answer but in my situation I am not sure I would be able to use Clonezilla or other GUI tools, because the installation is minimal with no GUI. Thanks in advance Michele

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• How do I edit keyboard preferences from the command line?

  - by jumpnett

  I want to swap the Caps Lock and Escape key as specified in this answer: Use the keyboard preferences to swap Caps Lock and Escape - seriously, how often do you use Caps Lock? Using vim you will be using Escape all the time, and having it available on the home row makes a huge difference. With the standard Ubuntu desktop, go through the menus: System - Preferences - Keyboard - Layouts tab. Then hit the "Layout Options" button, click on the triangle next to "Caps Lock key behaviour" and select "Swap ESC and CapsLock". but, I'm using Ubuntu Server with no gui, so how would I do this from the command line?

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• Where would a senior PHP developer locate the method getActiveEntries()?

  - by darga33

  I have a class named GuestbookEntry that maps to the properties that are in the database table named "guestbook". Very simple! Originally, I had a static method named getActiveEntries() that retrieved an array of all GuestbookEntry objects. Each row in the guestbook table was an object that was added to that array. Then while learning how to properly design PHP classes, I learned some things: Static methods are not desirable. Separation of Concerns Single Responsibility Principle If the GuestbookEntry class should only be responsible for managing single guestbook entries then where should this getActiveEntries() method most properly go? Update: I am looking for an answer that complies with the SOLID acronym principles and allows for test-ability. That's why I want to stay away from static calls/standard functions. DAO, repository, ...? Please explain as though your explanation will be part of "Where to Locate FOR DUMMIES"... :-)

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• Is it a bad practice to have an interface to define constants?

  - by FabianB

  I am writing a set of junit test classes in java. There are several constants, for example strings that I will need in different test classes. I am thinking about an interface that defines them and every test class would implement it. The benefits I see there are: easy access to constants: "MY_CONSTANT" instead of "ThatClass.MY_CONSTANT" each constant defined only once Is this approach rather a good or bad practice? I feel like abusing the concept of interfaces a little bit. You can answer generally about interfaces/constants, but also about unit tests if there is something special about it.

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• Most standard / Best way to keep the same top menu among different web pages?

  - by jsoldi

  What's the standard way to keep the same menu on top among different web pages without having to duplicate it on each page (I don't mean that it doesn't reload like when using frames and only loading the bottom part; I want the menu to scroll with the page when scrolling down, like this, this, this and pretty much every single web page that exists). I found this answer but the guy can't use Php and I can. Plus, I see several people giving different suggestions, but I assume there is a standard since pretty much every single web page in the whole web have a menu on top that stays the same among multiple pages . I'm just a newbie on web design (I can program Php and Html easily but I have no idea about standards and stuff like that since I'm self-taught guy ;)). What I would normally do is to include the menu with php but I'm not sure if this is the "standard".

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• FxCop / Code Analysis with VS2010 Ultimate

  - by Cuartico

  I've getting some information about this, but I still can find a proper answer, I was asked recently in my company for this : "run a fxcop analysis on that code and tell me the results". Ok, I have VS2010 Ultimate which has code analysis, but before making any comment, I browse it on the internet cause I want to implement the best choice... So, let's say I'm gonna use the same rules on both analyzers: Should I recommend using one above the other? Should I say "hey, thats kinda old, let's use code analysis!" Should I get the same results on different computers? (for what I undersand, fxcop gives you some "points" and for what I've read, sometimes it gives you diff points on diff computers, I don't know about this with code analysis Thanks, any help would be appreciated

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• My Inbox: How to save changes coming from disconnected POCOs

  I receive a lot of random emails from developers with Entity Framework questions. (This is not a request for more! :)) If I’m too busy to even look or if it’s something I can’t answer off the top of my head, I swallow my pride and ask the person to try the MSDN forums. If the email is from a complete stranger and has gobs and gobs of code that email will surely get a "please try MSDN forums" reply.  But sometimes I’m not in my usual state of “too...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How to log frame times in an existing OpenGL game? [on hold]

  - by J Collins

  I have been using FRAPS for some time to benchmark instantaneous frame rates in an OpenGL game for which I am creating maps. Until recently it had been quite reliable. Now however, the bench marking shortcut has been unresponsive and I can't explain why. Ideally I could have a logging system automatically start logging whenever the game had focus, but can't find a good tool to do so. So option a) find out how to make FRAPS reliable again or b) find a new tool. Could one of you kind folks help me? Edit: Concise questions Is there a widely recognised tool to log frame drawing times and rates for compiled applications? If the answer is universally the FRAPs tool, are there any clear cases in which logging will not or should not be expected to work?

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• What are good HTML 5 and PHP 5 books to get? [closed]

  - by lardtard

  I am looking for beginner books into PHP 5 (Maybe with a bit into MySQL?) and HTML 5. I started self-teaching myself PHP although it has become a problem as the tutorials online are either outdated or just crap. I also managed to start learning with very little HTML knowledge so I am looking to brush up on my HTML knowledge and get more into PHP. I also am unsure weather I should be looking into XHTML or HTML5, or both so an answer to that would be splendid. I just want to become more self-sufficient and less reliant on other for my programming needs. I've searched Google for books but I'm just not sure which one is the "best" for me and makes for good practice and habits which brings me here.

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• After a domain change, what can I do to recover lost traffic, rankings, impressions etc? [duplicate]

  - by Felix

  This question already has an answer here: How do I rename a domain and preserve PageRank? 3 answers I moved my site to a legacy exact-match domain I purchased about a couple of months ago. I have seen significant reduction in traffic, impressions, and rankings. I did all the right steps/best practices: change of address in GWT, map old site hierarchy and match to new site for 301 redirects etc. Indexation has gone through the Google process: old site has all but dissappeared from he index and new site is indexed, albeit with some 404 errors which I am addressing. Does anyone else who has gone through eh domain change process have any thoughts/advice? Thanks!

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• New White Paper: The Career Benefits Of Certification

  - by Harold Green

  Is Certification Worth It? The answer is a resounding YES for IT professionals who are looking to boost their career. While there are no guarantees, certification has been shown to enhance various aspects of an IT professional’s career, including: Employability Salary Job Effectiveness Job Satisfaction With the economy in a slump and unemployment at record levels, it’s tougher than ever to stand out in the competitive field of IT. Numerous research studies have shown that certification can provide IT professionals the knowledge & skills they need to succeed. This new white paper from Oracle and Pearson VUE summarizes the key advantages of certification and provides examples from IT professionals on the benefits of certification. Download your copy now.

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• Port an existing Quickly app from precise to quantal

  - by Ian B.

  I've developed an app using Quickly on a 12.04 system. In preparation for the 12.10 release, I'd like to have launchpad build a version for Quantal so that it can be used and tested by people from my ppa. I'm not willing to upgrade my system yet (I depend on it for work), how can I do this from 12.04 and my current quickly project? I have a virtualbox with 12.10 installed for testing, but I don't want to copy over the quickly project if I don't have to. Ideally, an answer should work with the quickly submitubuntu command so that it is packaged for installation in the /opt/extras.ubuntu.com directory.

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• What kind of programs/solutions can only be written with OOP or are too hard to achieve without it?

  - by user1598390

  Paraphrasing a recent question: What is Object Oriented Programming ill-suited for? I would like to ask the opposite question: What kind of programs cannot be written unless you use OOP? What kind of programs are not recommended to be written using non-OOP techniques? What kind of programs need OOP in order to even be written? What kind of programs would be too hard to write without OOP ? The answer to this question can help sell the idea of OOP to project leaders that have no special interest in code quality. At least they could buy the idea if one shows them the kind of things that are not even possible unless you use OOP.

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• How can I get stats for what 3rd-party sites have embedded our iframe widget?

  - by Su'

  Say we've produced a widget for other sites to use, like so: <iframe src="http://example.com/whatever.php" frameBorder="0" width="200px" height="300px" scrolling="no"></iframe> The client would like to be able to see within GA who has embedded the thing. Is there some referer information automatically passed that I can look for, or do I need to add something? whatever.php is already loading the analytics Javascript(we're also tracking clicks on an outbound link). [EDIT] Looking around a bit more, I found what seems to be a similar question on SO with an answer saying this can be found, automatically, but I still can't seem to find the information. The question's also old enough the respondent is probably referring to the old interface, though. Maybe someone could explain getting to it in the new look. (I won't likely be able to train this client to switch, deal with the old look, etc.)

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• Is programming or computer science in general, all about algorithms?

  - by wakandan

  As a grad student, I find it more and more common for prestigious companies (like Google, Facebook, Microsoft,...) to put algorithm questions in their test and interviews. A few startups I applied to also asked about algorithms. I wonder if algorithms fluency is the most important thing for software developer in those companies? If the answer being yes, what are the best method or resources for one to learn & practice about algorithms effectively? I can't seem to get interested in solving seemingly too complicated problems found in most textbook or websites. Though easily understand basic algorithms (like quicksort, bubblesort,...), I find it immensely difficult to remember and reuse them later. Thanks. P/S: If you ask me what I like, it's building good softwares to solve users' problems innovatively. I suppose that does not necessarily mean the software has to be very complicated.

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• Is there a phrase or word to describe an algorithim or program is complete in that given any value for its arguments there is a defined outcome?

  - by Mrk Mnl

  Is there a phrase or word to describe an algorithim or programme is complete in that given any value for its arguments there is a defined outcome? i.e. all the ramifications have been considered whatever the context? A simple example would be the below function: function returns string get_item_type(int type_no) { if(type_no < 10) return "hockey stick" else if (type_no < 20) return "bulldozer" else return "unknown" } (excuse the dismal pseudo code) No matter what number is supplied all possibiblites are catered for. My question is: is there a word to fill the blank here: "get_item_type() is ______ complete" ? (The answer is not Turing Complete - that is something quite different - but I annoyingly always think of something as "Turing Complete" when I am thinking of the above).

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• Where are the values of java.library.path being set?

  - by lmestre

  This one could be a WebLogic Server question, but this post is general for any java environment.We were getting  at the very beginning  java library path something like this: /home/lmestre/jdk1.6/jre/lib/amd64/server:/home/lmestre/jdk1.6/jre/lib/amd64:/home/lmestre/jdk1.6/jre/../lib/amd64So, the question was: Where WebLogic Server is setting java.library.path?I never found the answer, so why don't we try to try to answerWhere the JVM is setting java.library.path?public class LibraryPathPrinter {   public static void main(String[] args) {       String javaLibraryPath= System.getProperty("java.library.path");       System.out.println("java.library.path "+javaLibraryPath );   }}after a simplejavac LibraryPathPrinter.javaand then an easyjava LibraryPathPrintervoila!The program printed something like thisjava.library.path  /home/lmestre/jdk1.6/jre/lib/amd64/server:/home/lmestre/jdk1.6/jre/lib/amd64:/home/lmestre/jdk1.6/jre/../lib/amd64So the JVM was the culprit.Enjoy!

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• Will I get penalised by google for overflow hidden? [duplicate]

  - by Rascal Capac

  This question already has an answer here: How bad is it to use display: none in CSS? 5 answers I have 2 divs next to each other, div A and div B. Div A displays a whole wordpress post and div B displays about 15 excerpts of posts with the same tag. To get this looking nice I set the hight of div B to be the same as the hight of div A with javaScript. This means alot of post excerpts will be hidden due to overflow hidden on div B. Will Google penalise me for this, and if so, how can I make this work and still please Google? Ps. I would gladly prevent the excerpts from being indexed but the main post must be indexed Ds.

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• Repositories and the Save Method

  One of the questions I've been getting lately goes like this: Should a Repository class have a Save method? And the standard answer: It depends. It's hard to keep track of all the different approaches to implementing the repository pattern these days, but I assume when someone asks me this type of question they are thinking of using code like this: var employee = new Employee(); employeeRepository.Save(employee); var account = new Account(); accountRepository.Save(account); This...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How do I disable the upgrade to new version warning? [duplicate]

  - by Anatoliy

  This question already has an answer here: Disable Ubuntu Update Manager's new version warning 2 answers After I allowed Ubuntu on my notebook to upgrade to 13.4, it lost Wi-Fi connection. Network menu does not show wireless access points, but according to syslog it establishes connection. Also, the wireless router provides IP address to the host. I don't want to spend time on debugging and solving the problem that most probably will reappear with new update, so I decided to reinstall 12.10 version. It recognized Broadcom Wi-Fi modem right after the boot, and everything went great, until today I powered it on and suddenly found that it is running 13.4 and all my problems are back! Is it possible to instruct it to stay with 12.10 until I decide to upgrade?

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• Sense of "stop on..." stanza when job is a task

  - by Binarus

  Hi, an upstart question (I think I have read all relevant man pages but could not find the answer there): What is the sense of using a "stop on ..." stanza in the definition of a job which is a task? The manuals tell us that such a job, after being started, just waits until its script (or exec stanza) is executed completely, and then stops automatically. Given that, what is the point in using "stop on ..." stanzas in such job definitions? For example, this is the job definition for Upstart's (very important) rc job in Natty 11.04 (leaving out comments and empty lines): start on runlevel [0123456] stop on runlevel [!$RUNLEVEL] export RUNLEVEL export PREVLEVEL console output env INIT_VERBOSE task exec /etc/init.d/rc $RUNLEVEL IMHO, the job, after being started by a runlevel event, will be stopped automatically as soon as /etc/init.d/rc $RUNLEVEL has finished. Thank you very much for any explanation!

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• Please help, mounting other partitions on startup [duplicate]

  - by Kongthap

  This question already has an answer here: Is there a program to mount all of my drives automatically? 2 answers These are my all partitions. This is my /etc/fstab I would like to auto mount sda3 (NTFS), sda6 (ext4), sda7 (ext4) on startup, please help me edit the /etc/fstab file. I've searched for GUI way of doing this but I cannot find pysdm on the software center. Thanks. Edited!!! I've edited fstab as shown in the picture, I got error during booting, please help me find out what went wrong. P.S. I've created /mnt/extdisk1, I copied and pasted the UUID so it was not misspelling.

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• How selective do we need to be for an index to be used?

  - by TiborKaraszi

  You know the answer already: It depends. But I often see some percentage value quoted and the point of this post is to show that there is no such percentage value. To get the most out of this blog post, you should understand the basic structure for an index, i.e. how the b+ tree look like. You should also understand the difference between a clustered and a non-clustered index. In essence, you should be able to visualize these structures and searches through them as you read the text. If you find...(read more)

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