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• BIT of a Problem

  The BIT data type is an awkward fit for a SQL database. It doesn't have just two values, and it can do unexpected things in expressions. What is worse, it is a flag rather than a predicate, and so its overuse, along with bit masks, is a prime candidate for being listed as a 'SQL Code Smell'. Joe Celko makes the case. Free trial of SQL Backup™“SQL Backup was able to cut down my backup time significantly AND achieved a 90% compression at the same time!” Joe Cheng. Download a free trial now.

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• Employee Info Starter Kit (v4.0.0) - Visual Studio 2010 and .NET 4.0 Version is Available Now

  Employee Info Starter Kit is a ASP.NET based web application, which includes very simple user requirements, where we can create, read, update and delete (crud) the employee info of a company. Based on just a database table, it explores and solves most of the major problems in web development architectural space.  This open source starter kit extensively uses major features available in latest Visual Studio, ASP.NET and Sql Server to make robust, scalable, secured and maintainable web applications...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 can I designed multi-threaded application for larger user base

  - by rokonoid

  Here's my scenario, I need to develop a scalable application. My user base may be over 100K, every user has 10 or more small tasks. Tasks check every minute with a third party application through web services, retrieving data which is written in the database, then the data is forwarded to it's original destination. So here's the processing of a small task: while(true){ Boolean isNewInformationAvailable = checkWhetherInformationIsAvailableOrNot(); If(isNewInformationAvailable ==true){ fetchTheData(); writeToDatabase(); findTheDestination(); deliverTheData(); isAvailable =false; } } Here is the question: as the application is large, how should I approach designing this. I'm going to use Java to write it. Should I use concurrency, and how would you manage the concurrency?

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• lighter-weight (semantic) scuttle

  - by hroptatyr

  Before patching scuttle or semanticscuttle I thought I'd ask if anyone knows of a lighter-weight/faster system to tag bookmarks and vote on them? LAMP is fine. Ideally, I should be allowed to interfere with the database directly. My actual problem is I want to administer roughly 80m bookmarks, tag them, vote on them (it's just 10 users accessing the system), but here's the thing: All of those bookmarks will change their descriptions (and title lines) at least once a day. Both systems support the del.icio.us API but my LAMP stack is unable to cope with the load.

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• Is it possible to work with a dedicated server in XNA?

  - by Jake

  Hi I want to release my XNA game to the XBOX platform, but I'm worried about the networking limitations. Basically, I want to have a dedicated (authoritative) server, but it sounds like that is not possible. Which is why I'm wondering about: Using port 80 web calls to php-driven database Using an xbox as a master-server (is that possible?) I like the sound of #1, because I could write my own application to run on the xbox, and I would assume other users could connect to it similar to the p2p architecture. Anyone able to expand on theory #2 above? or #1 as worst-case scenario?

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• Algorithm for optimal combination of two variables

  - by AlanChavez

  I'm looking for an algorithm that would be able to determine the optimal combination of two variables, but I'm not sure where to start looking. For example, if I have 10,000 rows in a database and each row contains price, and square feet is there any algorithm out there that will be able to determine what combination of price and sq ft is optimal. I know this is vague, but I assume is along the lines of Fuzzy logic and fuzzy sets, but I'm not sure and I'd like to start digging in the right field to see if I can come up with something that solves my problem.

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• SQL Saturday #310 - Dublin, Ireland

  SQL Saturday is coming to Dublin on September 20, 2014. Come for a free day of SQL Server training and networking. This year's conference features a mix of levels, topics, and speakers like Buck Woody (Big Data), Jen Stirrup (PowerBI), Denny Cherry (Storage), Red Gate's Tom Austin (Continuous integration), and more. Register while space is available. Need to compare and sync database schemas?Let SQL Compare do the hard work. ”With the productivity I'll get out of this tool, it's like buying time.” Robert Sondles. Download a free trial.

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• Topics for covering in-depth programming knowledge

  - by black_belt

  I pursued my bachelors' degree in business administration, but my interest in Information Technology led me to acquire some knowledge of PHP programming and MySQL database. I find programming so interesting that I haven't applied for any job since my graduation. Currently I am staying home and just trying to acquire in-depth knowledge of PHP programming. So far I have developed couple of websites and web applications including Inventory+ Point of Sale Software and an Accounting system for small organizations. I aim to have knowledge that a Computer Science graduate should have, and for that I want to read books but I have no idea where to start from. Could you please suggest me some books and topics that I should study on? Thanks a lot :)

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• Am I getting paid a reasonable wage for web engineering?

  - by sailtheworld

  I've been doing some research and it looks like most people in my line of work - WEB ENGINEERING/WEB APPLICATION DEVELOPMENT - that get paid hourly, make anywhere from $30-80 an hour for their work. With that said, I have SEVEN years of experience with web development including OOP-PHP, MySQL, jQuery, OOP-JS, interface design, ajax, database architecture, etc. I am also very strong with visual design and workflow - thus, I've made some really high quality interactive interfaces. I also have a lot of experience with Zend Framework, Symfony, Wordpress, Drupal, etc and a really strong portfolio to show for it. Here's the catch: I'm 20 years old, haven't graduated from college yet (I'm doing part time school and ~30 hours a week of web development.) But I've literally been doing web apps since I was 13 years old. So my question is: is $14 an hour a reasonable starting wage for working at a company part time?

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• Adding multiplayer to an HTML5 game

  - by espais

  I am interested in making a game that I currently have a co-op experience, however I'm curious as to the best method of implementing this in HTML5. I have made games before using straight C sockets, and also with the Net library for SDL. What are some of my best options for doing this in a canvas-based environment? At present, all I can come up with are either AJAX/database solutions (with a high refresh rate), or somehow implementing a PHP server that would funnel the data through sockets. The overall gameplay would be a 2.5D platformer-ish type of game, so both clients would need to be continually updated with player positions, enemy positions, projectiles, environmental data, etc.

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• shotwell does not copy, but import them without copying

  - by user65764

  I tryed to import photos from my external harddisk into shotwell. After doing this, I disconected the harddisk and the photos disapeared immediately. I saw that the photos had been importet into the database without being copied. Copying the whole file into the picturefile is possible, but I would like to have to same fileorder in my library. Not a mixed up (organised by date (shotwell) and organised by filenames (my old organisation). It has not been any problem copying photos from a dvd. Is there any possibility to have the same filestructure for all fotos or is there a bug in shotwell? Thanks

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• Watch out for a trailing slash on $ORACLE_HOME

  - by user12620111

  Watch out for a trailing slash on $ORACLE_HOME oracle$ export ORACLE_HOME=/u01/app/11.2.0.3/grid/ oracle$ ORACLE_SID=+ASM1 oracle$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Thu Mar 29 13:04:01 2012 Copyright (c) 1982, 2011, Oracle.  All rights reserved. Connected to an idle instance. SQL> oracle$ export ORACLE_HOME=/u01/app/11.2.0.3/grid oracle$ ORACLE_SID=+ASM1 oracle$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Thu Mar 29 13:04:44 2012 Copyright (c) 1982, 2011, Oracle.  All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL>

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• Using Microsoft&apos;s Chart Controls In An ASP.NET Application: Serializing Chart Data

  In most usage scenarios, the data displayed in a Microsoft Chart control comes from some dynamic source, such as from a database query. The appearance of the chart can be modified dynamically, as well; past installments in this article series showed how to programmatically customize the axes, labels, and other appearance-related settings. However, it is possible to statically define the chart's data and appearance strictly through the control's declarative markup. One of the demos examined in the <a href="http://www.4guysfromrolla.com/articles/072209-1.aspx">Getting Started</a> article rendered a column chart with seven columns whose labels and values were defined statically in the <code>&lt;asp:Series&gt;</code> tag's

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• /dev/sda1 100% Mysql to blame?

  - by SJP

  I have a an API running that receives raw binaries, processes them, and then stores metadata about the bins in a mysql database. I have been running it for a couple days on a VM. Today the API stopped processing the mySQL commands. After using the command df-h the results were: root@mwdb1:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 104G 99G 0 100% / udev 16G 4.0K 16G 1% /dev tmpfs 6.3G 364K 6.3G 1% /run none 5.0M 0 5.0M 0% /run/lock none 16G 0 16G 0% /run/shm /dev/sdb1 5.5T 42G 5.2T 1% /data sda1 is at 100%

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• Pending and Approval process

  - by zen

  So let's say I have a DB table with 8 columns, one is a unique auto-incrementing used as ID. So I have a page that pulls in the info for each row based on query string ID. I want to give my users the ability to propose changes. Kinda like a wiki setup. So I was thinking I should just have another duplicate table or maybe database altogether (without the auto-incrementing column and maybe with a date edited column) that keeps all proposed changes in queue and then when I approve them, the script can move the row from the proposed DB to the real DB. Does this sound good or is there a better process for this?

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• SSMS Tools Pack 1.9.4 is out! Now with SQL Server 2011 (Denali) CTP1 support.

  - by Mladen Prajdic

  To end the year on a good note this release adds support for SQL Server 2011 (Denali) CTP1 and fixes a few bugs. Because of the new SSMS shell in SQL 2011 CTP1 the SSMS Tools Pack 1.9.4 doesn't have regions and debug sections functionality for now. The fixed bugs are: A bug that prevented to create insert statements for a database A bug that didn't script commas as decimal points correctly for non US settings. A bug with searching through grid results. A threading bug that sometimes happened when saving Window Content History. A bug with Window Connection Coloring throwing an error on startup if a server colors was undefined. A bug with changing shortcuts in SSMS for various features. You can download the new version 1.9.4 here. Enjoy it!

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• Where should I put a method that returns a list of active entries of a table?

  - 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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• JavaOne 2012: JDBC Community Discussion

  - by sowmya

  At JavaOne2012, Mark Biamonte of DataDirect Technologies and Lance Andersen of Oracle organized a discussion about JDBC. To learn more about using JDBC to develop database applications, see the JDBC trail in the Java Tutorials. You will know how to use the basic JDBC API to * create tables * insert values into them * query the tables * retrieve the results of the queries * update the tables In this process, you will learn how to use simple statements and prepared statements, and see an example of a stored procedure. You will also learn how to perform transactions and how to catch exceptions and warnings. - Sowmya

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• How can I keep track of a battle log on a web game?

  - by Jay W

  Recently I started working on a Web turn-based PvP RPG game. Now I'm working on the battle system but I encountered some issues: How can I keep track of everything that happens in the battle? It should keep track of the characters on the field, inventory, the damage done etc. I first thought I would simply put it in the (MySQL) database, but I think it will be too much. Especially if several people are in a battle. I thought of puting this in sessions or cookies but I don't think thats reliable. Does anyone have an idea how I can do this?

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• How do I add restrictions for users to sign up before they can access web site?

  - by user1867842

  How do I get my webpage not to go back when they hit the back button and are logged out and how can I add a web page to be blocked like FACEBOOK doesn't let you get into their site with out having a page or a account with them, and if you try to put something in the url and try to go to something on their site it gives you a web page that says "you have to be logged in first" . Like I don't want someone going to the url of the "index" page before they have signed up as a member they need to make an account first then they can have access to the "index" page. How do I do this. I have a website so far that has a database and the website has 5 pages so far and two of them which is the login and sign up page which are both used with php and mysql and they work fine. How do I restrict access to the main website by first having the users sign up with me for an account.

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• 301 redirect to 404 page?

  - by Kristian

  Currently i'm migrating www. prefix from my urls and use htaccess to do the job. Since we have new software and cleaned database some of the old urls doesnt exists anymore. Therefore some requests redirect to 404 page. 1. www.domain.com/old-page # htaccess redirect to non-www url, 301 2. domain.com/old-page # page does not exists, 404 Does this method have any SEO issues, or even affect pagerank? Or should i check the page existence before redirecting and show 404 without redirect?

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• Is there a program to manage movies and TV shows that supports mp4 tags?

  - by root45

  I'm looking for a media manager that will display and play movies and TV shows and will read data included in mp4 and m4v files. So far I've looked at XBMC, Moovida and Boxee and all of these seem to keep their own separate database or XML files for reading and storing tag information. I also looked at Banshee because of this answer, but it didn't read my tags. Banshee is also geared towards music videos instead of actual movies and TV shows. So I'm looking for software that Displays and plays movies and TV Shows Reads mp4 and m4v tags Preferably something with bulk import (i.e., I don't want to add 1,000 items to a new library) Bonus if it also has a tag editor Bonus if it's an XBMC extension

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• 2012. november 8. Oracle Day, Budapest

  - by user645740

  2 nap múlva Oracle Day Budapesten, november 8-án. Regisztráció itt! Aki nem regisztrált: regisztráljon, és jöjjön el az Oracle legnagyobb magyarországi rendezvényére! Aki regisztrált: jöjjön! 3 eloadást fogok tartani: A NAGY ADAT: ADATELEMZÉS, MINT AZ INNOVÁCIÓ MOTORJA szekcióban: Jobb áttekintés, gyorsabb cselekvés memóriában történo elemzésekkel (Exalytics) Fejlett elemzési lehetoségek az adatbázisban, Advanced Analytics: Oracle Data Mining és az R Enterprise A TERVEZZÜNK "FELHOT": SORVEZETO FELHO INFRASTRUKTÚRA ÉPÍTÉSÉHEZ szekcióban Oracle Database, merre fejlodik tovább? Regisztráció itt! http://www.facebook.com/oracledays

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• WSS Fails Installing On Step 5 Of The SharePoint Products and Technologies Configuration Wizard

  - by ptahiliani

  I've attempted to install WSS 3.0 with SP1 several times as both stand-alone and server farm with no luck on Windows Server 2008.  When I get to step 5 of Configuration wizard it begin installing and publishing services but on Step 5 I get the message "Failed To Register Sharepoint Services". The detail behind this message reads "An exception of type Microsoft.SharePoint.SPException was thrown". Then I Run the command psconfig -cmd configdb -create -database <whatever_unique_name> Click on Start / All Programs / Administrative Tools / SharePoint Products and Technologies Configuration Wizard Should work now (it did with me). PS: This was done on a Virtual Machine (VMware)

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• Implementation of recurring fee system

  - by TPSstar

  I'm developing an application which will list members who have not paid their any previous month's fee and a separate list for those who have paid the fee. So, lets say a member who will be paying fee through out the year, each month and if he didn't pay fee for march 2013 then app should highlight him as un-paid member. What would be best practice to achieve it. Adding fee invoices for whole year already in database when member is added then loop through his payments to check if fee is paid or not, or add a validation date for member on his each payment, for example payment made in Feb 2013 then member is valid till 28.02.2013. Check if date today is 28.02.2013 then he has not paid..

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