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  • Please recommend citations for source code documentation standards

    - by Aerik
    I'm trying to convince another group in my company that they need to provide more documentation in their source code (they want to hand off the code to my group) but they're treating it as a "nice to have". In my view, it's a necessity. I've run a source code analysis tool and it's showing about 10% comment lines - but looking at the source code, most of that is coming from entire functions that the author has commented out. Can anyone provide some authoritative citations / references for documentation / comment standards for source code? (In case it matters, we're a C# house, with a little Matlab thrown in).

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  • Quick example: why coding standards must be in place

    - by DigiMortal
    One quick example why coding standards must be in place. Take a look at the following code – property names are changed but not anything else. public string Property1 { get; set; }   public string Property2 {     get;     set; }   public string Property3 {     get; set; } And yes – it is real-world example.

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  • De-facto standards for customer information record

    - by maasg
    I'm currently evaluating a potential new project that involves creating a DB for typical customer information (userid, pwd, first & last name, email, adress, telfnr ...). At this point, requirements are only roughly defined. The customer DB is expected in the O(millions) of records. In order to calculate some back-of-the-envelope numbers for DB sizing and evaluate potential DB options & architectures, I'm looking for some de-facto standards for these kind of records. In particular, the std size of every field (first name, last name, address,...) or typical avg for a simple customer record would be great info. With so many e-commerce websites out there, there should be some kind of typical config that can be reused and avoid re-inventing the wheel. Any ideas?

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  • Programming to ANSI standards (for engineering)

    - by Jake
    I am currently tasked to write a software to help engineers design standard compliant designs. If there is a bad design, software will report an error or warning. Maybe it's just me, but anyone who has done this should be familiar with the massive amounts of ANSI standards tables like this one: http://en.wikipedia.org/wiki/Nominal_Pipe_Size Computers are, as its name suggest, computing machines, not lookup machines. I feel that feeding formulas into computers and churning out standard compliant designs is much more efficient than doing memory intensive data lookups that are prone to human input errors and susceptible to "data updates". I actually think that there are formulas to calculate all those numbers, but nobody so far could give me that information. Anyone been through this before? What is THE best approach to this? Thanks for sharing.

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  • Why use spaces instead of tabs for indentation? [closed]

    - by erenon
    Possible Duplicate: Are spaces preferred over tabs for indentation? Why do most coding standards recommend the use of spaces instead of tabs? Tabs can be configured to be as many characters wide as needed, but spaces can't. Example: Zend cs Pear cs Pear manual: This helps to avoid problems with diffs, patches, SVN history and annotations. How could tabs cause problems?

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  • Live Security Talk Webcast: Using Standards-Based Internet Explorer Features to Protect Apps (Level

    If you are building mashups and other web applications, what do you need to know to make sure that you are building secure applications that don't expose security vulnerabilities? What do you need to consider when building your applications using features from HTML 5, HTML 4.01, and important features of the browser? Attend this webcast to learn how to use standards-based Windows Internet Explorer features to protect the applications you develop....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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  • Sql Server Compact Edition 3.5: Does the data persist in the database file?

    - by jerbersoft
    Hi guys, I have this question in which I have a SQL Server Compact Edition database for a desktop application. I am completely new to Sql Server Compact Edition. The question is, does the data inserted in the database persist even if the application is shut down or restarted? Coz I cant seem to find my data when using Sql Server Management Studio to manage the database. Am I missing anything/something? EDIT: Is SQL Server Compact Edition used for caching local data only? We cant use it like what we normally do on Sql Server Express for example managing data using Sql Server Management Studio?

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  • Microsoft décide de bannir iTunes de Windows, suite à l'arrivée des doubles standards

    Microsoft décide de bannir iTunes de Windows, suite à l'arrivée des doubles standards Bill Gates vient d'annoncer qu'iTunes serait dorénavant banni de son système d'exploitation Windows. Voici ses déclarations officielles sur le sujet : "Au départ, nous étions très satisfaits qu'Apple ai déployé iTunes sur Windows ; nous avons gagné beaucoup d'utilisateurs grâce à cette seule application. Et puis nous avons entendu dire, par une source fiable, qu'Apple utilisait la même base de code pour iTunes Mac que pour la version Windows. Pire encore, il nous est apparu suite à une inspection plus approfondie qu'iTunes n'utilisait même pas l'API Windows ! Apple a conçu son propre système de scroll sans s'insp...

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  • Sql 2008 r2 DEV install failed

    - by obulay
    I am trying to install Sql 2008 r2 DEVeloper on Windows 2008 STD. It previously had Sql 2008 Enterprise installed. I first uninstalled SQL 2008. I think uninstall still leaves some crap in registery, and in Program files. Installation fails in the last step of the process - installation, about couple of minutes into it. Can't insert picture for you because serverfault does not allow me to do so. But it basically it: Error message: "Installation failed" I re-installed SQL 2008 Enterprise on this box and we are not going to go to R2 on older servers that previously had SQL 2005 or SQL 2008 on it. Looking at Windows log: Activation context generation failed for "C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\SQLServer2008R2\x64\Microsoft.SqlServer.Configuration.SqlServer_ConfigExtension.dll". Dependent Assembly Microsoft.VC80.CRT,processorArchitecture="amd64",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="8.0.50727.4027" could not be found. Please use sxstrace.exe for detailed diagnosis.

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  • Allow and restrict remote sql server access

    - by Michel
    Hi, I want to expose my sql server instance via the internet. I've been programming asp.net to sql server for a long time, but for the first time i'm hosting the sql server myself instead of the clients server. So what i want to do is move my sql server from my dev machine at home to a virtual server (yet to hire). But of course i don't want anyone to just enter my sql server but just a few persons. So what i was thinking was to allow only a few ip addresses to the sql server instance. Can anyone tell me how i can expose my sql server to the internet and limit the access to the instance to only a few ip addresses? And ehm, if you know even better ways to secure it, i'd be happy, because this is the first time for me :) Michel

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  • What is the best aproach for coding in a slow compilation environment

    - by Andrew
    I used to coding in C# in a TDD style - write/or change a small chunk of code, re-compile in 10 seconds the whole solution, re-run the tests and again. Easy... That development methodology worked very well for me for a few years, until a last year when I had to go back to C++ coding and it really feels that my productivity has dramatically decreased since. The C++ as a language is not a problem - I had quite a lot fo C++ dev experience... but in the past. My productivity is still OK for a small projects, but it gets worse when with the increase of the project size and once compilation time hits 10+ minutes it gets really bad. And if I find the error I have to start compilation again, etc. That is just purely frustrating. Thus I concluded that in a small chunks (as before) is not acceptable - any recommendations how can I get myself into the old gone habit of coding for an hour or so, when reviewing the code manually (without relying on a fast C# compiler), and only recompiling/re-running unit tests once in a couple of hours. With a C# and TDD it was very easy to write a code in a evolutionary way - after a dozen of iterations whatever crap I started with was ending up in a good code, but it just does not work for me anymore (in a slow compilation environment). Would really appreciate your inputs and recos. p.s. not sure how to tag the question - anyone is welcome to re-tag the question appropriately. Cheers.

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  • Most effective work habit for coding? [on hold]

    - by Cris
    Working on a big solo project (~15,000 LOC), I am encountering the following phenomenon: I seem to work best when I program in short bursts of 10-15 minutes. Right now I am working on a section which is a complete first time for me architecturally and if I have any architectural issues that emerge when doing the implementation, I seem to be able to best serve these by taking a total break. Then, later, sketching out the ideas on some paper. And when I feel I have sufficient clarity, then going back to code. This iterates until that architectural issue for that section is resolved. This seems quite counter intuitive: that I can progress more quickly by coding less, and taking more breaks. I am nearing the end of the sections which are "first times" for me, and about to dive into stuff which I am much more familiar and am wondering if this counter intuitive efficiency will continue. So my question is: even for regular coding of sections one is familiar with, which don't require constant re-clarification of the best architecture, is more progress to be attained by taking more breaks and coding in bursts?

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  • Managing Scripts in Oracle SQL Developer

    - by thatjeffsmith
    You backup your databases, right? You backup you home computer – your media collection, tax documents, bank accounts, etc, right? You backup your handy-dandy SQL scripts, right? Ok, now that I’ve got your head nodding, I want to answer a question I get every so often: How can I manage my scripts in SQL Developer? This is an interesting question. First, it assumes that one SHOULD manage their scripts in their IDE. Now, what I think the question generally gets around to is, how can we: Navigate to our scripts Open them Execute them What a good IDE should have is an interface to your existing Version Control System (VCS.) SQL Developer supports out-of-the-box both Subversion and Git. You can also download an extension via check-for-updates to get support for CVS. Now, what I’m about to show you COULD be done without versioning and controlling your scripts – but I want to ask you why you wouldn’t want to do this? So, I’m going to proceed and assume that you do INDEED version your scripts already. Seeing what scripts you’ve already got in your repository This is very straightforward – just open the Team Versions panel. Then connect to your repository. Shows you the files in your source control system. Now, I could ‘preview’ said file right away. If I open the file from here, we get a temp file copy down from the server to the local machine. This is a local temp copy of the controlled script – I can read/execute, but not write to it. And that might be all you need. But, if your script calls other scripts, then you’re going to want to check out the server copy of your stuff down your local SVN working copy directory. That way when your script calls another script – you’re executing the PRODUCTION APPROVED copies of said scripts. And if you do SPOOL or other file I/O stuff, it will work as expected. To get to those said client copies of your scripts… Enter the Files Panel The Files panel is accessible from the View menu. You can get to your files, one of two ways. If you’ve touched the file recently, you can see it under the Recent tree. Otherwise, you can navigate to your local ‘checked out’ copies of your script(s). Open your local copies, see what’s changed, etc. And I can access the change history and see what’s been touched… What changes am I going to ‘push out’ if I commit this back to the server? Most of us work on teams, yes? This panel also gives me a heads up if someone else is making changes to the same file. I can see the ‘incoming’ changes as well. To Sum It Up… If I want to get a script to run: do a full get to your local directory open the script(s) The files panel will tell you if your local copy is out of date from the server and if you have made local changes you’ve forgotten to commit back up to the server and your fellow teammates. Now, if you’re the selfish type and don’t want to share, that’s fine. But you should still be backing up your scripts, and you can still use the Files panel to manage your scripts.

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  • SSAS: Utility to export SQL code from your cube's Data Source View (DSV)

    - by DrJohn
    When you are working on a cube, particularly in a multi-person team, it is sometimes necessary to review what changes that have been done to the SQL queries in the cube's data source view (DSV). This can be a problem as the SQL editor in the DSV is not the best interface to review code. Now of course you can cut and paste the SQL into SSMS, but you have to do each query one-by-one. What is worse your DBA is unlikely to have BIDS installed, so you will have to manually export all the SQL yourself and send him the files. To make it easy to get hold of the SQL in a Data Source View, I developed a C# utility which connects to an OLAP database and uses Analysis Services Management Objects (AMO) to obtain and export all the SQL to a series of files. The added benefit of this approach is that these SQL files can be placed under source code control which means the DBA can easily compare one version with another. The Trick When I came to implement this utility, I quickly found that the AMO API does not give direct access to anything useful about the tables in the data source view. Iterating through the DSVs and tables is easy, but getting to the SQL proved to be much harder. My Google searches returned little of value, so I took a look at the idea of using the XmlDom to open the DSV’s XML and obtaining the SQL from that. This is when the breakthrough happened. Inspecting the DSV’s XML I saw the things I was interested in were called TableType DbTableName FriendlyName QueryDefinition Searching Google for FriendlyName returned this page: Programming AMO Fundamental Objects which hinted at the fact that I could use something called ExtendedProperties to obtain these XML attributes. This simplified my code tremendously to make the implementation almost trivial. So here is my code with appropriate comments. The full solution can be downloaded from here: ExportCubeDsvSQL.zip   using System;using System.Data;using System.IO;using Microsoft.AnalysisServices; ... class code removed for clarity// connect to the OLAP server Server olapServer = new Server();olapServer.Connect(config.olapServerName);if (olapServer != null){ // connected to server ok, so obtain reference to the OLAP databaseDatabase olapDatabase = olapServer.Databases.FindByName(config.olapDatabaseName);if (olapDatabase != null){ Console.WriteLine(string.Format("Succesfully connected to '{0}' on '{1}'",   config.olapDatabaseName,   config.olapServerName));// export SQL from each data source view (usually only one, but can be many!)foreach (DataSourceView dsv in olapDatabase.DataSourceViews){ Console.WriteLine(string.Format("Exporting SQL from DSV '{0}'", dsv.Name));// for each table in the DSV, export the SQL in a fileforeach (DataTable dt in dsv.Schema.Tables){ Console.WriteLine(string.Format("Exporting SQL from table '{0}'", dt.TableName)); // get name of the table in the DSV// use the FriendlyName as the user inputs this and therefore has control of itstring queryName = dt.ExtendedProperties["FriendlyName"].ToString().Replace(" ", "_");string sqlFilePath = Path.Combine(targetDir.FullName, queryName + ".sql"); // delete the sql file if it exists... file deletion code removed for clarity// write out the SQL to a fileif (dt.ExtendedProperties["TableType"].ToString() == "View"){ File.WriteAllText(sqlFilePath, dt.ExtendedProperties["QueryDefinition"].ToString());}if (dt.ExtendedProperties["TableType"].ToString() == "Table"){ File.WriteAllText(sqlFilePath, dt.ExtendedProperties["DbTableName"].ToString()); } } } Console.WriteLine(string.Format("Successfully written out SQL scripts to '{0}'", targetDir.FullName)); } }   Of course, if you are following industry best practice, you should be basing your cube on a series of views. This will mean that this utility will be of limited practical value unless of course you are inheriting a project and want to check if someone did the implementation correctly.

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  • Nested SQL Select statement fails on SQL Server 2000, ok on SQL Server 2005

    - by Jay
    Here is the query: INSERT INTO @TempTable SELECT UserID, Name, Address1 = (SELECT TOP 1 [Address] FROM (SELECT TOP 1 [Address] FROM [UserAddress] ua INNER JOIN UserAddressOrder uo ON ua.UserID = uo.UserID WHERE ua.UserID = u.UserID ORDER BY uo.AddressOrder ASC) q ORDER BY AddressOrder DESC), Address2 = (SELECT TOP 1 [Address] FROM (SELECT TOP 2 [Address] FROM [UserAddress] ua INNER JOIN UserAddressOrder uo ON ua.UserID = uo.UserID WHERE ua.UserID = u.UserID ORDER BY uo.AddressOrder ASC) q ORDER BY AddressOrder DESC) FROM User u In this scenario, users have multiple address definitions, with an integer field specifying the preferred order. "Address2" (the second preferred address) attempts to take the top two preferred addresses, order them descending, then take the top one from the result. You might say, just use a subquery which does a SELECT for the record with "2" in the Order field, but the Order values are not contiguous. How can this be rewritten to conform to SQL 2000's limitations? Very much appreciated.

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  • Putting data from local SQL database to remote SQL database without remote SQL access enabled (PHP)

    - by Shyam
    Hi, I have a local database, and all the tables are defined. Eventually I need to publish my data remotely, which I can do easily with PHPmyadmin. Problem however is that my remote host doesn't allow remote SQL connections at all, so writing a script that does a mysqldump and run it through a client (which would've been ideal) won't help me here. Since the schema won't change, but the data will, I need some kind of PHP client that works "reverse". My question is if such a client exists and what would be recommended to use (by experience). I just need an one way trip here, from my local database (Rails) to the remote database (supports PHP), preferable as simple and slick as possible. Thank you for your replies, comments and feedback!

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  • linq to sql -> join

    - by ile
    SQL query: SELECT ArticleCategories.Title AS Category, Articles.Title, Articles.[Content], Articles.Date FROM ArticleCategories INNER JOIN Articles ON ArticleCategories.CategoryID = Articles.CategoryID Object repository: public class ArticleRepository { private DB db = new DB(); // // Query Methods public IQueryable<Article> FindAllArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID select new { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } .... } And finally, I get this error: Error 1 Cannot implicitly convert type 'System.Linq.IQueryable' to 'System.Linq.IQueryable'. An explicit conversion exists (are you missing a cast?) C:\Documents and Settings\ilija\My Documents\Visual Studio 2008\Projects\CMS\CMS\Models\ArticleRepository.cs 29 20 CMS Any idea what did I do wrong? Thanks, Ile

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  • How to get MAX value of a version-number (varchar) column in T-SQL

    - by Ogre Psalm33
    I have a table defined like this: Column: Version Message Type: varchar(20) varchar(100) ---------------------------------- Row 1: 2.2.6 Message 1 Row 2: 2.2.7 Message 2 Row 3: 2.2.12 Message 3 Row 4: 2.3.9 Message 4 Row 5: 2.3.15 Message 5 I want to write a T-Sql query that will get message for the MAX version number, where the "Version" column represents a software version number. I.e., 2.2.12 is greater than 2.2.7, and 2.3.15 is greater than 2.3.9, etc. Unfortunately, I can't think of an easy way to do that without using CHARINDEX or some complicated other split-like logic. Running this query: SELECT MAX(Version) FROM my_table will yield the erroneous result: 2.3.9 When it should really be 2.3.15. Any bright ideas that don't get too complex?

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  • Updating Xml attributes with new values in a SQL Server 2008 table

    - by SMD
    I have a table in SQL Server 2008 that it has some columns. One of these columns is in Xml format and I want to update some attributes. For example my Xml column's name is XmlText and it's value in 5 first rows is such as: <Identification Name="John" Family="Brown" Age="30" /> <Identification Name="Smith" Family="Johnson" Age="35" /> <Identification Name="Jessy" Family="Albert" Age="60" /> <Identification Name="Mike" Family="Brown" Age="23" /> <Identification Name="Sarah" Family="Johnson" Age="30" /> and I want to change all Age attributes that are 30 to 40 such as below: <Identification Name="John" Family="Brown" Age="40" /> <Identification Name="Smith" Family="Johnson" Age="35" /> <Identification Name="Jessy" Family="Albert" Age="60" /> <Identification Name="Mike" Family="Brown" Age="23" /> <Identification Name="Sarah" Family="Johnson" Age="40" />

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  • SQL Server 2008 DBNETLIB error

    - by Joseph
    Hi all Our ASp.net applications getting error as below" [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied " But i can connect with Enterprise manager management studio and Query analaizer with out any issue. It was running these applications with out any issue long time. last one week we are getting this error.If we restart the server .it works then it will come again after 3to 4 hours. We are running on Windows 2003 server. I was seraching and didnt find a solution yet. If anybody knows anything for this error, please post the details to resolve. Thank you in Advance Joseph

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  • Table fragmentation in SQL server

    - by Joseph
    Hi Anybody have an idea about Table fragmentation in SQL Server(not Index fragmentation).We have a table ,this is the main table and its not storing any data permently,dat come here and goes out continusly. there is no index on this because only insert and delete staements are running frequently. recently We face a huge delay for the response from this table. If we select anything it tooks more than 2 to 5 minuts to return result,even there is very few datas. At last we delete and recreate this table,and now its working very fine. Appreciate If any comments,how this is happening ? Joseph

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  • Multiple aggregate functions in one SQL query from the same table using different conditions

    - by Eric Ness
    I'm working on creating a SQL query that will pull records from a table based on the value of two aggregate functions. These aggregate functions are pulling data from the same table, but with different filter conditions. The problem that I run into is that the results of the SUMs are much larger than if I only include one SUM function. I know that I can create this query using temp tables, but I'm just wondering if there is an elegant solution that requires only a single query. I've created a simplified version to demonstrate the issue. Here are the table structures: EMPLOYEE TABLE EMPID 1 2 3 ABSENCE TABLE EMPID DATE HOURS_ABSENT 1 6/1/2009 3 1 9/1/2009 1 2 3/1/2010 2 And here is the query: SELECT E.EMPID ,SUM(ATOTAL.HOURS_ABSENT) AS ABSENT_TOTAL ,SUM(AYEAR.HOURS_ABSENT) AS ABSENT_YEAR FROM EMPLOYEE E INNER JOIN ABSENCE ATOTAL ON ATOTAL.EMPID = E.EMPID INNER JOIN ABSENCE AYEAR ON AYEAR.EMPID = E.EMPID WHERE AYEAR.DATE > '1/1/2010' GROUP BY E.EMPID HAVING SUM(ATOTAL.HOURS_ABSENT) > 10 OR SUM(AYEAR.HOURS_ABSENT) > 3 Any insight would be greatly appreciated.

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  • C# WinForms & SQL bindings

    - by vent
    I have a MSSQL database with many tables and relations. I want to bind it to my C# GUI application with text- and combo-boxes. Which one is the best way to do it: (1) Everything done manually by own classes and methods: Import data to dataset or to many datatables separately, then create dictionaries to comboboxes, manually retrieve data to textboxes and create a sql statement if update action will be invoked, or, (2) Done automatically by VS: Connect my controls with BindingSource and BindingNavigator if needed. I know how to deal with the first one, but if the second way would be better, my question is — how to achieve it? I haven't dealt with automatically created databindings and I don't know how to tell to DataBinding property (Key|Value|Text) about relations and current row's ID. And what is the method to cancel/update changes in all GUI elements? I need a simple solution for this scenario. It's a quick-and-dirty academical project, which must only "work" and be as fast implemented as it can. Thanks

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  • Compound IDENTITY column in SQL SERVER 2008

    - by Asaf R
    An Orders table has a CustomerId column and an OrderId column. For certain reasons it's important that OrderId is no longer than 2-bytes. There will be several million orders in total, which makes 2-bytes not enough. A customer will have no more than several thousand orders making 2-bytes enough. The obvious solution is to have the (CustomerId, OrderId) be unique rather than (OrderId) itself. The problem is generating the next Customer's OrderId. Preferably, without creating a separate table for each customer (even if it contains only an IDENTITY column), in order to keep the upper layers of the solution simple. Q: how would you generate the next OrderId so that (CustomerId, OrderId) is unique but OrderId itself is allowed to have repetitions? Does Sql Server 2008 have a built in functionality for doing this? For lack of a better term I'm calling it a Compound IDENTITY column.

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