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A Quick Look at the Services Offered by RDBMs vs. NoSQL
The world of IT has to deal with the issue of data storage. The reason for this is that there is plenty of data produced and created daily on the internet and on various business applications. In the past, RDBMs or Relational Database Management Systems were used for storage. Even though they are still used today, there are other offerings that present competition and anyone wishing to purchase data storage systems needs to make comparisons. One such competing system is NoSQL or Not Only ...
NOSQL,DATABASE,RDMS,DATABASE SUPPORT 2015-11-06 04:52:54
Using public key authentication in SSH
SSH is a popular cryptographic network protocol for secure network service operation. It is frequently used in remote server login. For a system administrator or software developer, SSH is frequently used to access remote servers or development servers or testing servers etc. To login with SSH, there are different authentication mechanisms : password, public key and interactive etc. If a remote server needs to be accessed frequently, password authentication may be too troublesome as p...
LINUX,DEBUG,SSH,PUBLIC KEY 2016-09-10 05:55:46
Dates in PHP and MySQL
I see a lot of people on forums and on my training courses asking about the best way (or any way) to manage dates stored in a MySQL database and used in PHP. Three options follow, but first the problem.PHP uses unix timestamps for all its date functionality. It has methods to convert these timestamps into pretty much any text format you could want but internally it uses the timestamp format. A timestamp is simply an integer. Specifically, it’s the number of seconds that have ela...
PHP,MySQL,Date format,Date,Comparison,Date compare 2011-10-17 14:00:57
How multitasking really works on Android and iOS
As the horsepower packed into mobile devices gets ever greater, more full-featured forms of multitasking are possible. The market leaders have very different ways of going about things, and there are numerous misconceptions about what is going on behind the scenes. This isn’t all the fault of the user, though. In the interest of ease of use, sometimes the multitasking metaphor is overly simplified on both Android and iOS. iOS: It’s more complicated than it looksEver since iOS...
Android,iOs,Multitasking,Task bar 2012-01-06 09:58:09
PHP sucks (but, some frameworks don't)
I started web development with PHP, and I've decided I've had enough. Why? Keep reading.PHP (the language) sucks. There, I said it. 1029380128301928301823 GlobalsObject system hacked onC extension system sucksDocumentation sucks (read more; no, I'm not drunk)Has a terrible communityAll in all, designed by total idiots. You've probably heard this a ton of times before, but, here it is again. THERE ARE JUST WAY TOO MANY GLOBALS. Why in the world does md5() need to be global? Do you serio...
PHP,Sucks,Framework,Good,Bad Design 2011-11-20 07:08:16
It’s Not Too Late to Learn How to Code
Coding is sort of like a superpower; with it you can create things that millions of people see. You can change the way people behave, the way they think, and the way they interact with others. This is beyond awesome, but I’ve also met a lot of people that think that this ability is inaccessible to them. I’ve met a lot of “non-technical†people who seem to think that this superpower is only bestowed on those fortunate enough to have it come easily to them at a very early...
Tips,Coding,Preparation,Interest 2011-10-17 11:26:38
Linux Command Line tips that every Linux user should know t
Below is the collection of Linux command line tips which I’ve found useful for Linux users. To get more information about the command mentioned below just open your terminal and type man <command>.Things a Linux user must learnLearn bash: No need to refer a lengthy bash guide or something else. Just read the complete man page of bash (man bash).Learn vim: You might be using Emacs or Eclipse for your work all the time but nothing can compete vim.Learn ssh: Learn the basics of passw...
Linux,Unix,Command line,Tips 2012-03-21 09:27:03
Diving Deeper into HTML5 Offline Browsing
Recently, I published an article on one of the new features in HTML 5 called Offline Browsing in HTML5 with ApplicationCache.The response to that article was good, and I was asked to expand on some further points including:how to decide on what files to cachethe implications of caching those filesdebugging the ApplicationCacheSo, that’s where this article will start: where the last one finished. If you haven’t, you should probably read the previous article before this o...
HTML5,Offline browsing,New breakthrough,Feature 2011-12-20 08:46:06
Can Your Programming Language Do This?
One day, you're browsing through your code, and you notice two big blocks that look almost exactly the same. In fact, they're exactly the same, except that one block refers to "Spaghetti" and one block refers to "Chocolate Moose." // A trivial example: alert("I'd like some Spaghetti!"); alert("I'd like some Chocolate Moose!"); These examples happen to be in JavaScript, but even if you don't know JavaScript, you should be able to follow along. The repeated code looks wrong, ...
Programming,Maintainability,Reusable 2011-05-31 07:42:41
How to write good requirements
Requirements are pretty ubiquitous in the embedded world. They are used to define tasks, help coordinate large development efforts, and to communicate the behavior of the desired end product between the developers and the customer. When done right, requirements can be very useful. Unfortunately, if you spend much time working in the embedded world you quickly discover that there are a lot of bad requirements. And then when you try to go fix them, you quickly discover that writing good req...
Requirement gathering,Good requirement 2012-02-18 12:53:15
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