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  • Upgrading SSIS Custom Components for SQL Server 2012

    Having finally got around to upgrading my custom components to SQL Server 2012, I thought I’d share some notes on the process. One of the goals was minimal duplication, so the same code files are used to build the 2008 and 2012 components, I just have a separate project file. What can SQL Monitor 3.2 monitor?Whatever you think is most important. Use custom metrics to monitor and alert on data that's most important for your environment. Find out more.

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  • Patterns and conventions to document changes while developing

    - by Talysson
    Let's say I'm developing a second version of an API, and there's some changes in method names and so on from the previous version. What's a good way to document these changes ? I mean, is it better to document while changing (but, maybe, there will be more changes before the release, so I think it could be more work than necessary) or write down some topic and document after all the changes are done ?

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  • Sorting data in the SSIS Pipeline (Video)

    In this post I want to show a couple of ways to order the data that comes into the pipeline. a number of people have asked me about this primarily because there are a number of ways to do it but also because some components in the pipeline take sorted inputs. One of the methods I show is visually easy to understand and the other is less visual but potentially more performant.

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  • Any Practical Alternative to the Signals + Slots model for GUI Programming?

    - by IntermediateHacker
    The majority of GUI Toolkits nowadays use the Signals + Slots model. It was Qt and GTK+, if I am not wrong, who pioneered it. You know, the widgets or graphical objects (sometimes even ones that aren't displayed) send signals to the main-loop handler. The main-loop handler then calls the events, callbacks or slots assigned for that widget / graphical object. There are usually default (and in most cases virtual) event-handlers already provided by the toolkit for handling all pre-defined signals, therefore, unlike previous designs where the developer had to write the entire main-loop and handler for each and every message himself (think WINAPI), the developer only has to worry about the signals he needs to implement new functionality on. Now this design is being used in most modern toolkits as far as I know. There are Qt, GTK+, FLTK etc. There is Java Swing. C# even has a language feature for it ( events and delegates ), and Windows Forms has been developed on this design. In fact, over the last decade, this design for GUI programming has become a kind of an unwritten standard. Since it increases productivity and provides greater abstraction. However, my question is: Is there any alternative design, that is parallel or practical for modern GUI programming? i.e Is the Signals + Slots design, the only practical one in town? Is it feasible to do GUI Programming with any other design? Are any modern (preferably successful and popular) GUI toolkits built on an alternative design?

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  • Extracting Windows 8 Start Screen Patterns

    - by oreon
    Is there any way to extract the Windows 8 Start Screen patterns, in order to use them as standalone wallpapers on other systems? For example see this screenshot: I am interested in the dark blue background. I heard that this background is somehow adapted to your chosen color theme. So many different variations should exist. Engadget has an article here briefly talking about these background patterns and the different color schemes. They call them "personalization tattoos".

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  • Android Form Design Overlaping

    - by Mashfuk
    In My Project I have to built a registration form like the following. But when I design the form it overlays some item. How can I easily design registration form in android. How can I solve this? Thanks in advanced. <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/ScrollView1" android:layout_width="fill_parent" android:layout_height="fill_parent" > <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#FFFFFF" > <TextView android:text="Registration Form" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content"> </TextView> <View android:layout_below="@id/textView1" android:background="#000000" android:layout_height="1dp" android:id="@+id/view1" android:layout_width="fill_parent" > </View> <!-- Child Menu Section of Registration Form --> <RelativeLayout android:layout_below="@id/textView1" android:id="@+id/rlKidsMenuRegForm" android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:layout_alignParentLeft="true" android:text="Do you use the kids MENU?" android:layout_height="wrap_content" android:layout_width="wrap_content" android:id="@+id/textView2"> </TextView> <EditText android:layout_toRightOf="@id/textView2" android:textSize="10sp" android:layout_height="15dp" android:text="EditText" android:id="@+id/editText1" android:layout_width="wrap_content"> </EditText> <EditText android:layout_height="wrap_content" android:text="EditText" android:textSize="10sp" android:id="@+id/editText2" android:layout_width="wrap_content" android:layout_below="@id/editText1"> </EditText> <EditText android:layout_toRightOf="@id/editText2" android:layout_below="@id/editText1" android:layout_height="wrap_content" android:textSize="10sp" android:text="EditText" android:id="@+id/editText3" android:layout_width="wrap_content"> </EditText> <View android:layout_below="@id/editText3" android:background="#000000" android:layout_height="1dp" android:id="@+id/view1" android:layout_width="fill_parent" > </View> </RelativeLayout> <!-- Mid Section of Registration Form --> <RelativeLayout android:layout_below="@id/rlKidsMenuRegForm" android:id="@+id/rlMidRegForm" android:layout_height="wrap_content" android:layout_width="fill_parent" android:background="#FFFFFF" > <EditText android:layout_alignParentLeft="true" android:layout_height="wrap_content" android:text="EditText" android:id="@+id/editText4" android:layout_width="wrap_content"> </EditText> <EditText android:layout_height="wrap_content" android:text="EditText" android:id="@+id/editText5" android:layout_width="wrap_content" android:layout_toRightOf="@id/editText4"> </EditText> <TextView android:text="TextView" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_width="fill_parent" android:id="@+id/textView3" android:layout_below="@id/editText5" > </TextView> <EditText android:layout_height="wrap_content" android:text="EditText" android:id="@+id/editText5" android:layout_width="fill_parent" android:layout_below="@id/textView3"> </EditText> <TextView android:text="TextView" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_width="fill_parent" android:layout_below="@id/editText5" android:id="@+id/textView3" > </TextView> <TextView android:text="TextView" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_width="wrap_content" android:id="@+id/textView3" android:layout_below="@id/textView3" > </TextView> </RelativeLayout> </RelativeLayout> </ScrollView>

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  • Design issue when having classes implement different interfaces to restrict client actions

    - by devoured elysium
    Let's say I'm defining a game class that implements two different views: interface IPlayerView { void play(); } interface IDealerView { void deal(); } The view that a game sees when playing the game, and a view that the dealer sees when dealing the game (this is, a player can't make dealer actions and a dealer can't make player actions). The game definition is as following: class Game : IPlayerView, IDealerView { void play() { ... } void deal() { ... } } Now assume I want to make it possible for the players to play the game, but not to deal it. My original idea was that instead of having public Game GetGame() { ... } I'd have something like public IPlayerView GetGame() { ... } But after some tests I realized that if I later try this code, it works: IDealerView dealerView = (IDealerView)GameClass.GetGame(); this works as lets the user act as the dealer. Am I worrying to much? How do you usually deal with this patterns? I could instead make two different classes, maybe a "main" class, the dealer class, that would act as factory of player classes. That way I could control exactly what I would like to pass on the the public. On the other hand, that turns everything a bit more complex than with this original design. Thanks

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  • Database Design for a double entry accounting system

    - by Khou
    Should journal entries be recorded in a database design? In the real world it makes sense to keep a daily entry book, then later transfer the daily entry book into double entry accounts. but in the computerized version, doing this produces duplicate records and that doesn't quite make sense? ???? What i mean is 1) user enter details , it gets recorded (this would be called the journalbook in real life) 2) the software does all the double entry accounting then references the journalbook and splits up the transaction into the double entry accounting system.

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  • php html flash website design tools for beginner

    - by LikeToCode
    I have 5 years of C#, Perl and SQL programming experience but I've just found a web designer and developer job. I dont know anything about it but need to design a website using PHP, flash and HTML, whatever it is. Can you give me pointers on where to start to learn it all ASAP and start designing the website? I downloaded WAMP and learned to configure it. Other then that I dont know what to do next. They gave me a few pictures to incorporate, but I dont know how :)

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  • REST api design to retrieve summary information

    - by Jacques René Mesrine
    I have a scenario in which I have REST API which manages a Resource which we will call Group. A Group is similar in concept to a discussion forum in Google Groups. Now I have two GET access method which I believe needs separate representations. The 1st GET access method retrieves the minimal amount of information about a Group. Given a *group_id* it should return a minimal amount of information like { group_id: "5t7yu8i9io0op", group_name: "Android Developers", is_moderated: true, number_of_users: 34, new_messages: 5, icon: "http://boo.com/pic.png" } The 2nd GET access method retrives summary information which are more statistical in nature like: { group_id: "5t7yu8i9io0op", top_ranking_users: { [ { user: "george", posts: 789, rank: 1 }, { user: "joel", posts: 560, rank: 2 } ...] }, popular_topics: { [ ... ] } } I want to separate these data access methods and I'm currently planning on this design: GET /group/:group_id/ GET /group/:group_id/stat Only the latter will return the statistical information about the group. What do you think about this ?

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  • How do I get SSIS Data Flow to put '0.00' in a flat file?

    - by theog
    I have an SSIS package with a Data Flow that takes an ADO.NET data source (just a small table), executes a select * query, and outputs the query results to a flat file (I've also tried just pulling the whole table and not using a SQL select). The problem is that the data source pulls a column that is a Money datatype, and if the value is not zero, it comes into the text flat file just fine (like '123.45'), but when the value is zero, it shows up in the destination flat file as '.00'. I need to know how to get the leading zero back into the flat file. I've tried various datatypes for the output (in the Flat File Connection Manager), including currency and string, but this seems to have no effect. I've tried a case statement in my select, like this: CASE WHEN columnValue = 0 THEN '0.00' ELSE columnValue END (still results in '.00') I've tried variations on that like this: CASE WHEN columnValue = 0 THEN convert(decimal(12,2), '0.00') ELSE convert(decimal(12,2), columnValue) END (Still results in '.00') and: CASE WHEN columnValue = 0 THEN convert(money, '0.00') ELSE convert(money, columnValue) END (results in '.0000000000000000000') This silly little issue is killin' me. Can anybody tell me how to get a zero Money datatype database value into a flat file as '0.00'?

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  • From a language design perspective, if Javascript objects are simply associative arrays, then why ha

    - by Christopher Altman
    I was reading about objects in O'Reilly Javascript Pocket Reference and the book made the following statement. An object is a compound data type that contains any number of properties. Javascript objects are associative arrays: they associate arbitrary data values with arbitrary names. From a language design perspective, if objects are simply associative arrays, then why have objects? I appreciate the convenience of having objects in the language, but if convenience is the main purpose for adding a data type, then how do you decide what to add and what to not add in a language? A language can quickly become bloated and less valuable if it is weighed down by several overlapping methods and data types (Is this a true statement or am I missing something).

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  • Database design for very large amount of data

    - by Hossein
    Hi, I am working on a project, involving large amount of data from the delicious website.The data available is at files are "Date,UserId,Url,Tags" (for each bookmark). I normalized my database to a 3NF, and because of the nature of the queries that we wanted to use In combination I came down to 6 tables....The design looks fine, however, now a large amount of data is in the database, most of the queries needs to "join" at least 2 tables together to get the answer, sometimes 3 or 4. At first, we didn't have any performance issues, because for testing matters we haven't had added too much data in the database. No that we have a lot of data, simply joining extremely large tables does take a lot of time and for our project which has to be real-time is a disaster.I was wondering how big companies solve these issues.Looks like normalizing tables just adds complexity, but how does the big company handle large amounts of data in their databases, don't they do the normalization? thanks

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  • Database design in blogging systems

    - by Peter
    As a learning exercise I'm trying to put myself a blogging system. The goal is to code something that will let me create multiple blogs, like blogger.com or wordpress.com, but much simplified. I would like to ask you, what do you think is best database design for this type of script. Is it better to have one big table, containing posts from all blogs of all users (like friendfeed) or would it be better to create separate table for each blog's posts? Big thanks in advance for your help, Peter.

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  • Cost of Design vs Development

    - by Marco
    I usually develop content management solutions in php, I work with designers that create the front end (html & css) and I usually develop the backend (php & mysql) of said cms. I know that the cost of the website may vary depending of the complexity of the html or the backend, but taking as reference a very basic website, what percentage of the cost should go to design and what percentage should go to development. I want to make clear that I as the developer i'm in charge of all the effects and animations of the websites using some of the javascript frameworks, not the designer. I just want to know what´s the fair share for me and for the designer.

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  • Database Design for multiple users site

    - by jl
    Hi, I am required to work on a php project that requires the database to cater to multiple users. Generally, the idea is similar to what they have for carbonmade or basecamp, or even wordpress mu. They cater to multiple users, whom are also owners of their accounts. And if they were to cancel/terminate their account, anything on the pages/database would be removed. I am not quite sure how should I design the database? Should it be: separate tables for individual user account separate databases for individual user account or otherwise? Kindly advise me for the best approach to this issue. Thank you very much.

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  • FIFA official website design and development

    - by Morron
    Hi, I'm just curious about design and development of official FIFA website. What is the programming language being used to build the site? What is the development methodology they are using? I used Firebug to look around the site.Here's sth I found: HTTP/1.1 200 OK Cache-Control: no-store, no-cache, must-revalidate, private Content-Type: text/html Server: Microsoft-IIS/7.0 x-ua-compatible: IE=EmulateIE7 Vary: Accept-Encoding Content-Length: 8320 Date: Tue, 15 Jun 2010 17:54:19 GMT Connection: keep-alive According to that, I think they use IIS 7 to run the site but I'm not sure what programming language they are using. Any comment is a drop of water in the glass.

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  • How to Design a SaaS Database

    - by Josh Curren
    I have a web app that I built for a trucking company that I would like to offer as SaaS. What is the best way to design the database? Should I create a new database for each company? Or should I use one database with tables that have a prefix of the company name? Or should I Use one database with one of each table and just add a company id field to the tables? Or is there some other way to do it?

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  • SSIS 2005 Error while using script component Designer: "Cannot fetch a row from OLE DB provider "BUL

    - by user150541
    I am trying to debug a dts package in SSIS. I have a script component designer where I pass in the input variables to increment a counter. When I try to msgbox the counter value, I get the following error. Error: 0xC0202009 at STAGING1 to STAGING2, STAGING2 Destination [1056]: An OLE DB error has occurred. Error code: 0x80040E14. An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E14 Description: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".". An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E14 Description: "The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.". An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E14 Description: "Reading from DTS buffer timed out.". Below is the part of the code within the script component designer : Imports System Imports System.Data Imports System.Math Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper Imports Microsoft.SqlServer.Dts.Runtime.Wrapper Public Class ScriptMain Inherits UserComponent Dim iCounter As Integer Dim iCurrentVal As Integer Dim sCurrentOracleSeq As String Dim sSeqName As String Dim sSeqAltProcName As String Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer) ' ' Add your code here ' Row.SEQIDNCASE = iCounter + iCurrentVal iCounter += 1 MsgBox(iCounter + iCurrentVal, MsgBoxStyle.Information, "Input0") End Sub Public Overrides Sub PreExecute() sCurrentOracleSeq = Me.Variables.VSEQIDCurVal iCurrentVal = CInt(sCurrentOracleSeq) MsgBox(iCurrentVal, MsgBoxStyle.Information, "No Title") iCounter = 0 sSeqName = Me.Variables.VSEQIDName sSeqAltProcName = Me.Variables.VSEQIDAlterProc End Sub Public Overrides Sub PostExecute() Me.Variables.VSEQIDUpdateSQL = "Begin " & sSeqAltProcName & "('" & sSeqName & "'," & (iCounter + iCurrentVal) & "); End;" End Sub End Class Note that the above part of code works perfectly fine if I comment out the lines that has Msgbox.

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  • IoC and Design Time

    - by benPearce
    I have a WPF application which I am using to learn MVVM and IoC. The problem is that the Model used by one of the Views expects to pull one of its dependancies in the constructor from an IoC container. When working on this View in the Visual Studio designer it cannot show the design because an exception is being raised in the model. Is there a way around this? Am I pulling my dependancies in the wrong place in code or is there a way I can pass in constructed dependancies, perhaps through Constructor injection. At present the IoC container is setup in code in App.xaml.cs. The IoC container is a roll-your-own taken from this article on MSDN - http://msdn.microsoft.com/en-us/magazine/cc337885.aspx

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  • Implementing Domain Driven Design

    - by Steve Dunn
    Is anyone using the techniques from Domain Driven Design? I've recently read the Eric Evans book of the same name (well, most of it!) and would be interested to hear from anyone who's implemented all/some of it in a project (particularly in C#/C++) I've kept this question open ended as I'd like to see as many comments as possible, but I have a few questions in particular: 1 - Should value types be real 'value types' if the language supports it? e.g. a struct in C# 2- Is there any feature in C# that makes clearer the association between the language and the model (for instance, this is an entity, this is an aggregate etc.)

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  • Database design: circular references

    - by SlappyTheFish
    I have three database tables: users emails invitations Emails are linked to users by a user_id field. Invitations are also linked to users by a user_id field Emails can be created without an invitation, but every invitation must have an email. I would like to link the emails and invitations tables so it is possible to find the email for a particular invitation. However this creates a circular reference, both an invitation and an email record hold the id for the same user. Is this bad design and if so, how could I improve it? My feeling is that with use of foreign keys and good business logic, it is fine.

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  • 'Design By Contract' in C#

    - by IAmCodeMonkey
    I wanted to try a little design by contract in my latest C# application and wanted to have syntax akin to: public string Foo() { set { Assert.IsNotNull(value); Assert.IsTrue(value.Contains("bar")); _foo = value; } } I know I can get static methods like this from a unit test framework, but I wanted to know if something like this was already built-in to the language or if there was already some kind of framework floating around. I can write my own Assert functions, just don't want to reinvent the wheel.

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