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• Part-time work as a beginner programmer [on hold]

  - by Valentas

  I wrote to one company near my university (starting in September) and they responded that they will probably hire me from the work I have already done (some projects and Euler problems solving). It's for 15 hours/week or so in order to not fall behind uni work. They require Python, SQL, XML and a good idea about how the Web works. The job role involves acquiring data from the Web and supplying it as search results for flight seekers (people). I am eager to learn but still, what can I do to become prepared for this? I ask because I tend to gravitate from one technology to the other, trying out things but never mastering it properly. What Web technologies are involved in such a job role? I have two months and want to learn as much as possible because there is much info but I have no idea where to start.

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• Auto backup mysql database to dropbox [closed]

  - by Rob

  Is it possible to automatically backup my database to dropbox? If so how can I do it? The key criteria I need it to do is: Be automatic. Be Mac compliant. Be weekly. Sync with dropbox (http://www.dropbox.com) automatically. Be able to backup several databases from several websites. Be free... or relatively cheap! Have a guide on how to setup the solution. UPDATE: I've managed to setup an auto weekly backup using a cronjob: mysqldump -u username -pMyPassword Mydatabase > backup-file.sql That is saving the backup to my hosting space. It's a start but isn't ideal, how can I save that backup to a folder on my computer? Automatically of course.

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• NZ Herald/ Yahoo Daily Deals Delivered via Web Slices in IE8

  Recently I have been having a lot of fun building a competition Slice of Kevin intended in part to teach people about Web Slices in New Zealand. The competition has been very successful and has created a loyal group of users. Since launch 2 months ago we have had 26,843 users of the slice. Each of those users have spent on average 4.1 hrs each engaged inside the web slice over that time. We also reached out through social media and found that facebook worked as a perfect companion to the Web Slice...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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• What is the difference between all-static-methods and applying a singleton pattern?

  - by shahensha

  I am making a database to store information about the users of my website (I am using stuts2 and hence Java EE technology). For the database I'll be making a DBManager. Should I apply singleton pattern here or rather make all it's methods static? I will be using this DBManager for basic things like adding, deleting and updating User profiles. Along with it, I'll use for all other querying purposes, for instance to find out whether a username already exists and to get all users for administrative purposes and stuff like that. My questions What is the benefit of singleton pattern? Which thing is most apt here? All static methods or a singleton pattern? Please compare both of them. P.S. The database is bigger than this. Here I am talking only about the tables which I'll be using for storing User Information.

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• Web Based School/College ERP

  - by Ashok

  We are planning to build a Web Based School/College ERP. The main problem we face is Hardware support. Since it is Web Based, it is not possible to implement Biometrics. But most of our clients do ask for Biometrics. I hope we need to use a desktop application to do that. Can you please give some suggestions for this? Another thing is, here we don't have stable internet connection. We frequently face disconnection. This is another problem for Web Based CRM. In HTML5 there is a feature called Offline storage. Is it possible to use this feature for such dynamic ERP? For example, let's say we need to enter marks for the students. Net got disconnected. Is it possible to use HTML5 offline feature to save the marks offline and upload them when we got connection back?

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• Backing up VPS and Database Servers for website

  - by TravisK

  I currently have an "un-managed" (no help from hosting company) windows vps server. I am working on a good backup solution to return my site back online within a few hours. I am pretty comfortable backing up and restoring my database, however what is a good solution for backing up my VPS for easy recovery? Should I just use windows backup and create an image? I'm open to suggestions. Additionally, has anyone had to restore an entire VPS before? Is it reasonable to have it back up and running in a few hours?

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• Secure Web Apps from SQL Injection in ASP.Net

  In the first part of this two-part series you learned how SQL injection works in ASP.NET 3.5 using a MS SQL database. You were also shown with a real web application which was not secure against SQL injection attacks how these attacks can be used by the hacker to delete sensitive information from your website such as database tables. In this part you will learn how to start securing your web applications so they will not be vulnerable to these kinds of exploits. A complete corrected example of the insecure web application will be provided at the end of this tutorial.... ALM Software Solution ? Try it live! Requirements Management, Project Planning, Implementation Tracking & QA Testing.

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• Google I/O 2012 - The Web Platform's Cutting Edge

  Google I/O 2012 - The Web Platform's Cutting Edge Dimitri Glazkov, Alex Komoroske From embeds to widgets to managing complex applications, you constantly face the need for better componentization as a web developer. Many-a-lines of JavaScript have been written to alleviate this problem -- poorly. But help is on the way. The web platform is gaining a powerful new set of capabilities designed to better help you build robust, reusable, and packageable components. We'll cover what they do, their status, and how you can start playing with these powerful emerging technologies today. Most importantly, we'll show you how to get involved and help influence their direction as they mature. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 2795 48 ratings Time: 47:45 More in Science & Technology

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• Are Web Safe Colors Still Relevant?

  - by VxJasonxV

  I still remember one of my high school teachers lecturing us about the "web safe colors". A set of 216-256 colors that you should confine your designs to use, and nothing else besides them. Last I knew, Photoshop still has the "web safe" yield icon[1] on it's color picker. Are web safe colors still a concern? Outside of the obvious application (accessibility, legacy software versions, etc.), how much consideration should I give to limiting my color choice for my general audience? [1] Or was it the cube? I never remember.

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• Subscribe/Publish Model in Web-based Application (c#) - Best Practices for Event Handlers

  - by KingOfHypocrites

  I was recently exposed to a desktop application that uses an publish/subscribe model to handle commands, events, etc. I can't seem to find any good examples of using this in a web application, so I wonder if I am off base in trying to use this for web based development (on the server side)? I'm using asp.net c#. My main question in regards to the design is: When using a publish/subscribe model, is it better to have generic commands/events that pass no parameters and then have the subscribers look at static context objects that contain the data relevant to the event? Or is it better to create custom arguments for every event that contain data related to the event? The whole concept of a global container seems so convenient but at the same time seems to break encapsulation. Any thoughts or best practices from anyone who has implemented this type of model in a web based application? Even suggestions on this model out of the scope of my question are appreciated.

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• Maintenance window and recovery for a large database

  - by NYSystemsAnalyst

  One of our teams is developing a database that will be somewhat large (~500GB) and grow from there (I know 500 Gigs may seem small to many of you, but it will be one of the larger databases in our shop). One of the issues they are grappling with is backing up and restoring the database. Basically, the database will have several "data" tables and one table used for storing images / documents. We need to accomplish the following: Be able to quickly backup and restore only the data tables (sans images) to our test server for debugging and testing purposes. In the event of a catastrophic database failure, restore the data tables only to get most of the application up and running ASAP. Then, restore the images table when possible. Backup the database within the allotted nightly time window (a few hours). My questions are: Is it possible to accomplish the first two goals while still having the images stored in the same database? If so, would we use filegroups, filestream, or something else? How do other shops backup their databases in a reasonable time window while maintaining high availability? Do you replicate to a second server and backup from there?

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• SharePoint 2007: Error message when adding a Web part to a list or library page

  - by Cherie Riesberg

  Sytmptom:   You have a list or document library page (allitems.aspx) and you are trying to add a Web part.  You get an error message: Unable to add selected Web part(s).  (name of Web part): The file is not checked out.  You must first check out this document before making changes. Publishing features are not turned on and it is not a page that lives in a library accessible by the GUI. Solution:  Open the site in SharePoint Designer and check out the page. Then, check in the page after modifications are done.  It seems like this is just a bug.

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• Alternatives to OAuth?

  - by sdolgy

  The Web industry is shifting / has shifted towards using OAuth when extending API services to external consumers & developers. There is some elegance in simple....and well, the 3-step OAuth process isn't too bad ... i just find it is the best of a bad bunch of options. Are there alternatives out there that could be better, and more secure? The security reference is derived from the following URLs: http://www.infoq.com/news/2010/09/oauth2-bad-for-web http://hueniverse.com/2010/09/oauth-2-0-without-signatures-is-bad-for-the-web/

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• SharePoint Database security corruption

  - by H(at)Ni

  Hello, One time I faced an issue where my customer is having an HTTP 500 internal server error while trying to access any SharePoint site. The problem appeared once he moved back and forth with inheriting/breaking inheritance of permissions over different levels in the site collection. "Security corruption in database" sounds very tough for a customer running a production portal with a backup that can make him lose around 3 weeks of valuable data. However, the solution tends not to be that hard, there's an stsadm command that help us detect the corruption and even delete the orphaned items causing the corruption. Follow these steps: a. stsadm -o databaserepair -url http://SITEURL -databasename DBNAME                and it returned some orphaned items.            b. stsadm -o databaserepair -url http://SITEURL -databasename DBNAME -deletecorruption                and it removed the orphaned items. Cheers,

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• Products missing from backend after import

  - by byronyasgur

  My client imported about 70 products into magneto and the all imported properly it seemed, but now only about half of them appear in the catalog ( backend ) searching for the SKU returns no results. I have searched the net for an hour looking for some information on this but I cant find any, furthermore I cant seem to find out how to verify whether the products are in the database or not, I thought I could just look for the products table in phpmyadmin, but Magento's EAV database structure looks more complicated than I'm used to. Does anyone know how to fix this, or even to locate products in the database. Edit : From talking to the client she thinks that this might have happened after she did a reindex.

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• GDD-BR 2010 [2C] Building for a Faster Web

  GDD-BR 2010 [2C] Building for a Faster Web Speakers: Eric Bidelman Track: Chrome and HTML5 Time: C [12:05 - 12:50] Room: 2 Level: 151 Why should a web app be less performant than a native app? This session will focus on creating the next generation of web applications. We'll look HTML5 features that increase app performance, Chrome Developer Tools to speed development, Native Client for running native C++ in the browser, and Google Chrome Frame to bring these awesome features to users with older browsers. From: GoogleDevelopers Views: 84 1 ratings Time: 37:32 More in Science & Technology

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• Database Insider - July 2012 issue

  - by Javier Puerta

  The July issue of the Database Insider newsletter is now available. (Full newsletter here) INFORMATION INDEPTH NEWSLETTERDatabase Insider Edition - July 2012 Optimize Your Communications Applications on Oracle ExadataThe communications industry is experiencing explosive growth, which means that high-performing, scalable, and cost-effective solutions are critical for success. Learn more by accessing white papers, success stories, product information, videos, podcasts, and more. Register now. Oracle Exadata Enables Neuralitic's SevenFlow Application ImprovementsImproves application performance 3x and compression rate/scalability 10x. ElectraCard Services Runs Oracle Exadata on Oracle LinuxAchieves processing speeds greater than 12,000 TPS and increases performance 2x. Read full newsletter here

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• How to find the reason for a weekly downtime on an Ubuntu web server hosted by AWS?

  - by IceSheep

  We started monitoring our web server using Pingdom and found out that we have a downtime of a few minutes every Sunday at 0:00 UTC. The test runs every minute and checks if a successful HTTP response (code 200) is returned on port 80. The test fails due to a timeout (no response after 30 seconds). Here's what we've already checked – without success: Since we run our webserver behind a load balancer, I've set the Pingdom test on the load balancer's public DNS and the webserver's public DNS in order to find out if there's a problem with the AWS load balancer – both tests return the same result We set up Munin on our webserver. Everything looked fine even after the failure. Since the last failure lasted only 2 minutes I suppose Munin couldn't capture a potential problem (it only checks every 5 minutes) I have checked /var/log/apache2/error.log and /var/log/syslog for suspicious entries I have checked /etc/cron.weekly and /etc/crontab for suspicious entries I have searched for files created or last-modified during 0:00 and 0:15 using this method: touch -t 201209020000 start touch -t 201209020015 end find / -newer start -and ! -newer end (nothing found) Has anybody experienced a similar problem? Any proposals on how to find the reason for this behavior? It's Ubuntu 10.04 LTS running on an AWS m1.large instance. Thanks!

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• What is the best way to INSERT a large dataset into a MySQL database (or any database in general)

  - by Joe

  As part of a PHP project, I have to insert a row into a MySQL database. I'm obviously used to doing this, but this required inserting into 90 columns in one query. The resulting query looks horrible and monolithic (especially inserting my PHP variables as the values): INSERT INTO mytable (column1, colum2, ..., column90) VALUES ('value1', 'value2', ..., 'value90') and I'm concerned that I'm not going about this in the right way. It also took me a long (boring) time just to type everything in and testing writing the test code will be equally tedious I fear. How do professionals go about quickly writing and testing these queries? Is there a way I can speed up the process?

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• Database Context and Singleton injection with IoC

  - by zaitsman

  All of the below relates to a ASP.NET c# app. I have a Singleton Settings MemoryCache that reads values from database on first access and caches these, then invalidates them using SQL Service Broker message and re-reads as required. For the purposes of standard controllers, i create my Db Context in a request scope. However, this obviously means that i can't use the same context in the Settings Cache class, since that is a singleton and we have a scope collision. At the moment, i ended up with two db contexts - the Controllers get it via IoC container, whereas a Singleton just creates it's own. However, i am not satisfied with this approach (mostly due to the way i feel about two contexts, the cache doesn't set anything on the db hence concurrency is not an issue as much). What is a better way to do it?

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• Modern website/webapp setup

  - by onepiece

  I'm new to web development. From looking at popular open-source frameworks for both front-end and back-end, I have a general idea of what the modern full-stack web setup looks like: Database <- Back-end language ~ REST API <- Front-end Notes: The back-end language (Python, Ruby, PHP, Java) generates the API, which is the only layer between the back and the front. The API will have authentication to protect private data. The front-end sends GET and POST requests to the API. A MVC framework can be used, such as Backbone, Angular, or Ember.js. Does this align with best practices for web development?

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• Where is the best and easiest place to store global website settings [migrated]

  - by Darkcat Studios

  I'm just putting together an internal data system for a client, which is ASP.NET VB, backed by an SQL database, on an in-house IIS7.5 dedicated server. I want to store certain global settings, such as the age limit for news articles, admin contacts etc, in a file NOT within the database (i.e. to avoid unnecessary database query's) Where would the best place to store this be? global.asax? app.config? or a custom XML file? how would i import these at runtime? (probably to session variables) ETA: Also - the settings must be editable from within the site, i.e. an admin section i'm yet to build

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• Why use binary files to stack up different versions on DMSs?

  - by edgarator

  I've used both Liferay and Alfresco trying to use them as the Document Management System for an intranet. I noticed the following: They use the file system and the database to store files They use a GUID to name the file on the filesystem and that GUID is used as an Id in the database. The GUID-named file is a binary file The GUID-named binary file stores all versions for a given file The path for the file in the DMS doesn't match the one in the file system The URL makes reference to the GUID when a certain file is requested What I want to know is why is this, and what would be the best way of doing it. Like how to would you create the binary file (zip?), and what parts would you keep in the binary file and what parts would you store in the database (meta-data, path?). I'm assuming some of the benefits of doing it like this. As having the same URL for a file, regardless of its current document path. And having only one file even if the file has changed names over time.

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• php cms withouth database

  - by user1791795

  A friend of mine asked me for a easy website for him. As it was just 3 subpages, no database need or anything, I've done it quite fast with plain PHP, HTML, JS and CSS. But then another and another friend showed up. They only wanted arrange differently they navigation, some different picutures etc. So I though, is there any kind of CMS, that allows build small business website (barbershop, local groceries shop), with small list of subpages, yet allowing us to arrange look'n'feel. There's no need for the databas as content won't change, or can be stored in simple textfiles for example. Things like WordPress might be simple overkill Does anyone know such cms?

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• What’s your worst day? – Database Deployment Edition

  Ever had your database deployment derailed? Or, if not derailed, delayed? We’d like to hear what caused the problem and whether you think it could have been avoided. Our favourite tale of woe will win a $50 Amazon certificate. Can 41,000 DBAs really be wrong? Join 41,000 other DBAs who are following the new series from the DBA Team: the 5 Worst Days in a DBA’s Life. Part 3, As Corrupt As It Gets, is out now – read it here.

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