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  • asp.net web apps: are OnServerValidate necessary with custom validators

    - by peroija
    I recently created a .net web app that used over 200 custom validators on one page. I wrote code for both ClientValidationFunction and OnServerValidate which results in a ton of repetitive code. My sql statements are parameterized, I have functions that pull data from input fields and validates them before passing to the sql statements or stored procedures. And the javascript validates the fields before the page submits. So essentially the data is clean and valid before it even hits the OnServerValidate and clean after it anyways due to the aforementioned steps. This makes me question, is OnServerValidate really needed when I validate on the clientside?

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  • PHP OOP: Am i following right way?

    - by sineverba
    I'm learning OOP (PHP). I've realized my own CRUD Class, that performs some kind of queries SQL. Btw, a Gasoline asked us to realize a smart, simple web-app where he can update prices of his gasoline (gasoline, diesel, lpg) and via an API i could recall them and display in his site. So, I did create a new Class Gasoline but it perform some methods of CRUD Class public function getPrezzoBenzina($id) { $prezzo_benzina = $this->distributore->sql('SELECT prezzo_benzina FROM prezzi WHERE id = '.$id); return $prezzo_benzina } And so on (code is pseudocode, just to explain). I could perform all my code only with help of Crud Class... without necessity of Class Gasoline. So, what I'm missing about OOP? Where am I wrong?

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  • Derby 10.9.1.0 released

    - by kah
    Earlier today, the release of Apache Derby 10.9.1.0 was announced. In addition to the usual chunk of bug fixes, this release includes the following new features: NATIVE authentication, a new authentication mechanism with better support for managing credentials. See this section of the developer's guide for an introduction. JDBC 4.1 escape syntax completes Derby's support for JDBC 4.1. Allow multi-column subqueries in EXISTS predicates (SQL:2003 Feature T501, Enhanced EXISTS predicate) to support auto-generated SQL from some persistence frameworks. Download it now and try it out!

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  • Easy QueryBuilder - A User-Friendly Ad-Hoc Advanced Search Solution

    Constructing an easy and powerful QueryBuilder interface becomes more important for complex data grid filtering and accurate reporting services. In this article, I'll discuss how to build a query search engine using ASP.NET AJAX and dynamic SQL. The main goal is to provide an interactive interface to allow users select query attributes, operators, attribute values, and T-SQL operators so that the data context query list can be easily composed and a search engine is invoked.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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  • Une banque est la risée des hackers et du web, suite à sa manière particulière de se prémunir des in

    Une banque est la risée des hackers et du web, suite à sa manière particulière de se prémunir des injections SQL Une banque californienne a une manière bien particulière de se protéger des attaques par injection SQL. Dans la FAQ de son site, l'établissement demande à ses clients de ne pas utiliser les mots suivants (comme réponse à leur question secrète) : insert, delete, drop, update, null et select. Cette information a été découverte le 14 mai et depuis, elle a fait le tour du web, suscitant de grands fous rires dans la communautés des amateurs et professionnels de la sécurité informatique. Depuis hier, la FAQ n'est plus en ligne mais, fort heureusement, nous disposons d'une capture d'écran de ce qui avait été publié :

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  • oracle certification

    - by Victor
    I am a j2ee developer with 6+ yrs of experience. I have scjp1.4 and scwcd 1.4. To puruse my dream of becoming an architect, I wish to round out my knowledge and make my knowledge base broader. To that respect, I have decided to take the 1Z0-047 Oracle Database SQL Expert Exam as a first step. My questions are: What is a good book/resource for this? Should I follow this website http://www.sql-ex.ru/certification/certification.php Also after completing this ceritificate, will I get a physical certificate that I will put on my resume?

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  • Windows 7 Upgrades to Come at Cheaper Prices

    Are you a Windows 7 user Did you know that you can upgrade your current version of Windows 7 to a more advanced version with little effort Well if you didn t know that by now now you know. Many others left in the dark about this ease in upgrades will likely be informed soon as Microsoft launched an upgrade assault of sorts on consumers on April 4.... Why Respond to SQL Failures? PREVENT IT DOWNLOAD this Free Paper. 5 Tips to Eliminating SQL Server Downtime. Learn More!

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  • Visual Studio 2010 RC and Entity Framework 4 RC Support in the New Version of ADO.NET Data Providers

    Devart has recently announced the release of dotConnect products for Oracle, MySQL, PostgreSQL, and SQLite - ADO.NET providers that offer Entity Framework support, LINQ to SQL support, and contain an ORM model designer for developing LINQ to SQL and EF models based on different database engines. New dotConnect ADO.NET providers offer complete support for Visual Studio 2010 Release Candidate and Entity Framework 4 Release Candidate. Entity Developer 2.80, a designer for modeling and code generation...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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  • Alerts are good, aren't they?

    - by fatherjack
    It is accepted best practise to set some alerts on every SQL instance you install. They aren't particularly well publicised but I have never seen any one not recommend setting up alerts for Error 823, 824 and 825. These alerts are focussed on successful access(IO) to the hard drives that SQL Server is using. If there are  any errors when reading or writing to the drives then one of these errors will be returned. Having the alerts on these errors means that any IO issues will be brought to the...(read more)

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  • LINQ/LAMBDA filter query by date [on hold]

    - by inquisitive_one
    I'm trying to use LINQ to SQL to retrieve earnings data for a particular date range. Currently the table is set up as follows: Comp Eps Year Quarter IBM .5 2012 2 IBM .65 2012 3 IBM .60 2012 4 IBM .5 2011 2 IBM .7 2013 1 IBM .8 2013 2 Except for Eps, all fields have a data type of string or char. Eps has a data type of double. Here's my code: var myData = myTable .Where(t => t.Comp.Equals("IBM") && Convert.Int32(string.Format("{0}{1}", t.Year, t.Quarter)) <= 20131); I get the following error when I tried that code: Method 'System.String Format(System.String, System.Object, System.Object)' has no supported translation to SQL How can I select all Eps that has a year & quarter less than "20132" using a lambda expression?

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  • Retrieve data from an ASP.Net application using ADO.Net 2.0 connected model

    - by nikolaosk
    I have been teaching Entity Framework,LINQ to SQL,LINQ to objects,LINQ to XML for some time now. I am huge fan of LINQ to Entities and I am using Entity Framework as my main data access technology. Entity framework is in the second version right now and I can accomplish most of the things I need. I am sure the guys in the ADO.Net team will implement many more features in the future. I am a strong believer that you cannot really understand the benefits of LINQ to SQL or LINQ to Entities unless you...(read more)

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  • My 7 is Slow: A Guide to Upgrading Your XP Machine for Optimum Performance with Windows 7

    When the Windows Vista operating system came out you decided that you were better off with what you had. The odds are that you probably made a very smart move. When Windows 7 came out you were also prudent. You waited to see if the newest operating system would be worth the expense of upgrading. Now that you have decided to upgrade to Windows 7 you will have some performance issues to deal with.... Microsoft SQL Server? Value Calculator Reduce Costs & Increase Value with Microsoft SQL Server? 2008. Download Today!

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  • CAM ???????????????XML?????????????.

    - by drrwebber
    CAM???????????XML??????,??????????????????,??????????XML??????????????????????,???????????,????????????? ?????????: ???????????XML???????????? ????????XSD???WSDL,??????XML???? ???????NIEM,OASIS,WSDL????????XML Schema ????????????? ??????????? ????XML???? ?UML/XMI???? ???????- CAMV Java?? ?????SQL???????????CAMV ????XPath????????????? XML??????CAMV-Ant??? XML?????????? ????????????? CAM???????,??????????XML??,?????????????. ???XML????,?????????????OASIS CAM?????????XML????, OASIS?CAM????????????????? ??OASIS CAM ?????? ???XML??????????????,???,??SQL???, ????????, ????????????XML?????????. CAM??????????????, ???????,????????,??,XML Schema, ???XML????,???NIEM?OASIS???, ??????????????????? CAM??????????????????????????, ??????,?????XML??????????????????????. CAMV??? ??????Java???,???????OASIS CAM??????XML????? CAMV XML???????????????(SOA)???,??????????????? ????????(EAI), LEXS(????????)? ebXML ?????? Download

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  • Mysql query does not update row [closed]

    - by Gerculy Robert
    // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // get value of id that sent from address bar /*$id=$_GET['$usrid'];*/ // Retrieve data from database $sql="SELECT * FROM user WHERE id='$usrid'"; $result=mysql_query($sql); $rows=mysql_fetch_array($result); ?> <table width="400" border="0" cellspacing="1" cellpadding="0"> <tr> <form name="form1" method="post" action="update.php"> <td> <table width="100%" border="0" cellspacing="1" cellpadding="0"> <tr> <td>&nbsp;</td> <td colspan="3"><strong>Update site info</strong> </td> </tr> <tr> <td align="center">&nbsp;</td> <td align="center">&nbsp;</td> <td align="center">&nbsp;</td> <td align="center">&nbsp;</td> </tr> <tr> <td align="center">&nbsp;</td> <td align="center"><strong>User Name</strong></td> <td align="center"><strong>Site url</strong></td> <td align="center"><strong>Url banner</strong></td> </tr> <tr> <td>&nbsp;</td> <td align="center"> <input name="username" type="text" id="username" value="<? echo $rows['username']; ?>"> </td> <td align="center"> <input name="siteurl" type="text" id="siteurl" value="<? echo $rows['siteurl']; ?>" size="40"> </td> <td> <input name="urlbanner" type="text" id="urlbanner" value="<? echo $rows['urlbanner']; ?>" size="40"> </td> </tr> <tr> <td>&nbsp;</td> <td> <input name="id" type="hidden" id="id" value="<? echo $rows['id']; ?>"> </td> <td align="center"> <input type="submit" name="Submit" value="Submit"> </td> <td>&nbsp;</td> </tr> </table> </td> </form> </tr> </table> <?php // close connection mysql_close(); ?> // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // update data in mysql database $sql="update user SET siteurl='$siteurl', username='$username', urlbanner='$urlbanner' WHERE id=$usrid"; $result=mysql_query($sql); // if successfully updated. if($result){ echo "Successful"; echo "<BR>"; echo "<a href='edit.php'>View result</a>"; } else { echo "ERROR"; } Hello, I have this two pages wich should update 3 rows. The problem is it does not update all , only 2 . I tried over 1 hour to find the problem but nothing. The row , siteurl, is not being updated at all . The table is : varchar(255) Database and session is ok. Any idea ? It's just a simple update code , should work fine :(

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  • Getting Started Integrating Windows Azure with Microsoft Office Solutions

    Nearly everyone starts learning anything new by beginning with something simple and adding incremental knowledge. One of the biggest challenges with Windows Azure and SQL Azure is that the simple beginning seems a bit more elusive. The "Hello World" application in the new world of cloud computing, while not overly complex in concept, requires a good measure of preparation and configuration. The following content is designed to aid you in getting started with Windows Azure and SQL Azure in the spirit...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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  • See you at European SharePoint Conference, Barcelona, May 5-8, 2014

    - by Sahil Malik
    SharePoint, WCF and Azure Trainings: more information I’ll be at the European SharePoint Conference, in Barcelona, May 5th – 8th, 2014. They just released their full conference program. I have the following sessions planned, Monday, the 5th of May Full day workshop: SharePoint 2013 App Development (see the full outline here) Thursday the 8th of May, 10:15 AM Optimizing SQL Server for speedy SharePoint If you're a SQL Server DBA or a SharePoint admin, attend this session and WOW your bosses when you return. SharePoint is slow! Really? Okay, it is a common complaint I hear. But did you know, a few tweaks here and there, and with the very same hardware you can get many 100 times better performance. And many of these you can do on a running production environment. Read full article ....

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  • Silverlight 4 + RIA Services - Ready for Business: Exposing Data from Entity Framework

    To continue our series I wanted to look next at how to expose your data from the server side of your application.  The interesting data in your business applications come from a wide variety of data sources.  From a SQL Database, from Oracle DB, from Sql Azure, from Sharepoint, from a mainframe and you have likely already chosen a datamodel such as NHibernate, Linq2Sql, Entity Framework, Stored Proc, a service.   The goal of RIA Service in this release is to make it easy to...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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  • Introducing Next-Generation Enterprise Auditing and Database Firewall Platform Webcast, 12/12/12

    - by Troy Kitch
    Join us, December 12 at 10am PT/1pm ET, to hear about a new Oracle product that monitors Oracle and non-Oracle database traffic, detects unauthorized activity including SQL injection attacks, and blocks internal and external threats from reaching the database. In addition, this new product collects and consolidates audit data from databases, operating systems, directories, and any custom template-defined source into a centralized, secure warehouse. This new enterprise security monitoring and auditing platform allows organizations to quickly detect and respond to threats with powerful real-time policy analysis, alerting and reporting capabilities. Based on proven SQL grammar analysis that ensures accuracy, performance, and scalability, organizations can deploy with confidence in any mode. You will also hear how organizations such as TransUnion Interactive and SquareTwo Financial rely on Oracle today to monitor and secure their Oracle and non-Oracle database environments. Register for the webcast here.

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  • [EF + Oracle] Inserting Data (Sequences) (2/2)

    - by JTorrecilla
    Prologue In the previous chapter we have see how to create DB records with EF, now we are going to Some Questions about Oracle.   ORACLE One characteristic from SQL Server that differs from Oracle is “Identity”. To all that has not worked with SQL Server, this property, that applies to Integer Columns, lets indicate that there is auto increment columns, by that way it will be filled automatically, without writing it on the insert statement. In EF with SQL Server, the properties whose match with Identity columns, will be filled after invoking SaveChanges method. In Oracle DB, there is no Identity Property, but there is something similar. Sequences Sequences are DB objects, that allow to create auto increment, but there are not related directly to a Table. The syntax is as follows: name, min value, max value and begin value. 1: CREATE SEQUENCE nombre_secuencia 2: INCREMENT BY numero_incremento 3: START WITH numero_por_el_que_empezara 4: MAXVALUE valor_maximo | NOMAXVALUE 5: MINVALUE valor_minimo | NOMINVALUE 6: CYCLE | NOCYCLE 7: ORDER | NOORDER 8:    How to get sequence value? To obtain the next val from the sequence: 1: SELECT nb_secuencia.Nextval 2: From Dual Due to there is no direct way to indicate that a column is related to a sequence, there is several ways to imitate the behavior: Use a Trigger (DB), Use Stored Procedures or Functions(…) or my particularly option. EF model, only, imports Table Objects, Stored Procedures or Functions, but not sequences. By that, I decide to create my own extension Method to invoke Next Val from a sequence: 1: public static class EFSequence 2: { 3: public static int GetNextValue(this ObjectContext contexto, string SequenceName) 4: { 5: string Connection = ConfigurationManager.ConnectionStrings["JTorrecillaEntities2"].ConnectionString; 6: Connection=Connection.Substring(Connection.IndexOf(@"connection string=")+19); 7: Connection = Connection.Remove(Connection.Length - 1, 1); 8: using (IDbConnection con = new Oracle.DataAccess.Client.OracleConnection(Connection)) 9: { 10: using (IDbCommand cmd = con.CreateCommand()) 11: { 12: con.Open(); 13: cmd.CommandText = String.Format("Select {0}.nextval from DUAL", SequenceName); 14: return Convert.ToInt32(cmd.ExecuteScalar()); 15: } 16: } 17:  18: } 19: } This Object Context’s extension method are going to invoke a query with the Sequence indicated by parameter. It takes the connection strings from the App settings, removing the meta data, that was created by VS when generated the EF model. And then, returns the next value from the Sequence. The next value of a Sequence is unique, by that, when some concurrent users are going to create records in the DB using the sequence will not get duplicates. This is my own implementation, I know that it could be several ways to do and better ways. If I find any other way, I promise to post it. To use the example is needed to add a reference to the Oracle (ODP.NET) dll.

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  • Mview??????????????~BI/DWH????????(3)

    - by Yusuke.Yamamoto
    Oracle Database ???BI???????????????????????????????????????????????????????????????????????????????????? ?????????????·???(Mview)???????????!????????????? ??????????(08:12)????????????? BI???????????? Enterprise Manager ??SQL??????????????????????? Enterprise Manager ??SQL????·??????????? ????????????????????·???????????? ?????·??????????? BI????????????(Oracle Database ??????·?????????????Mview???) Enterprise Manager ?????????????????? ??????????????Oracle GRID Center ??????????????? ????????????????????????? ????????DWH????????????????·???????? ???? ????????·???(Mview/????????)|??????????? Oracle Enterprise Manager|??????????? DWH(?????????)??·??

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  • "En 2020, 80% des applications tourneront dans le cloud", déclare Microsoft, en expliquant que les DSI devront s'adapter à ces changements

    "En 2020, 80% des applications tourneront dans le cloud", déclare Microsoft, tout en expliquant que les DSI devront s'adapter à ces changements Au premier jour des TechDays 2011, nous avons pu rencontrer Jérôme Trédan, Directeur produits serveurs et infrastructure de cloud computing chez Microsoft France. Sa mission : encadrer une équipe de chefs de produits sur toute les lignes de produits serveurs, dans 3 grands domaines : les infrastructures (Windows Server, System Center et toute l'offre de sécurité de la gamme Forefront) ; l'axe des plateformes applicatives de Microsoft (SQL Server, Biztalk, .Net) ; et la partie infrastructures cloud computing (qui se développe très rapidement avec Windows et SQL Azure).

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