Unsurprisingly, Objective-C has the most growth, but the growth has slowed since our last update. C# growth is solid, hovering around 100% for the past 3 years. Visual Basic and C++ continue to decline. Perl and Java are still showing signs of life, but the growth is not very significant. What does all this mean? First, it is clear the iOS development is hot as is all mobile development. However, mobile development does not seem to be affecting Java or the growth of mobile is offsetting the decline of Java in the enterprise space. Why does Java and some of the others show relative growth, but not strong growth in the trend graphs? Basically, we are seeing that while some of the languages are still showing increasing job postings the relative growth chart, the percentage of postings is less than before. So, other languages not in this list may be increasing in demand quicker than these traditional languages.Comments Off | Filed in Technology | Tags: iOS, java
The lack of women in programming is in part a cultural issue that differs from region to region. In developed countries, very few women work as programmers whereas in Brazil and India a lot of women pursue careers in IT. Women in developed countries perceive the field as isolating and very few young women graduate in computer science. This perception of isolation was based in reality decades ago, but that is no longer the case today.
Well, you may be surprised to learn that the earliest computer programmers were women and that the programming field was once stereotyped as female.Comments Off | Filed in Technology | Tags: gender, programming
This study [PDF] shows that Oracle Database 11g holds a substantial advantage over Microsoft SQL Server 2008. More specifically:
The study concludes:
What is clear is that both Microsoft and Oracle have provided their customers with efficient tools for management of their respective database systems. But when the cost of operations is analyzed, Oracle Database 11g can provide organizations with 41 percent annual DBA-related cost savings over Microsoft SQL Server 2008.
(via)3 Comments | Filed in Oracle, Technology | Tags: microsoft, sql-server
The following software utilities and tools will help you work faster and make you more efficient at using your computer.
Enso is a free application launcher, but it is also more than just that. Enso is similar to Ubiquity, however, Enso works at the Windows operating system level, not just inside your browser. It is available to you in any application you’re using. On the other hand, Ubiquity is open-source, Enso is not. Enso is also similar to Quicksilver on Mac.
Walt Mossberg of the Wall Street Journal explains:
Enso is dead simple to use. You just hold down the Caps Lock key and type an Enso command, which is displayed in a translucent overlay. Once the command is typed, you simply release the Caps Lock key to activate it, and the overlay disappears. If you type fast, it all happens in a flash. For instance, to launch the Firefox Web browser, you just hold down the Caps Lock key and type "open firefox." To look up the meaning of the word "proclivity," you just hold down the Caps Lock key and type "define proclivity."
CLCL is a freeware clipboard caching utility. It allows you to stack things (text, images…) on your clipboard in one batch then bounce once to the destination and paste them all in the appropriate places, one at a time.
AutoHotkey is a free, open-source macro tool that allows you to automate almost anything by sending keystrokes and mouse clicks. You can write a mouse or keyboard macro by hand or use the macro recorder. Using AutoHotkey, virtually any key, button, or combination can become a hotkey.
Microsoft PowerToys for Windows XP have many useful (and free) “toys”, but one of the most useful is the “Virtual Desktop Manager”. It allows you to manage up to four virtual desktops, each with a taskbar controller, unique wallpapers, and hotkey support. Virtual desktops provide an excellent way to kill distractions, stay focused and concentrate on the task at hand.
On Linux, both GNOME and KDE have virtual desktops built-in. The Leopard version of Mac OS X added this feature, called Spaces.
Almost all operating systems and applications that run on them have keyboard shortcuts. There is a reason why they are called shortcuts, it’s because once you master them it takes shorter time to perform a task using keyboard shortcuts than using the mouse. The following is a list of common and useful shortcuts:
I have been using the above tools for a while. I can now do things on my computer faster than I’ve ever been able to.
Other than the ones mentioned above, what tools or tips do you use that help you be more productive using your computer?4 Comments | Filed in Technology, Tips | Tags: tool, windows
VirtualBox, Virtual PC, VMware Workstation and a few other software packages help you create and run multiple virtual machines on your desktop or laptop enabling you to run multiple operating systems simultaneously on a single computer.
My personal favorite is VirtualBox (recently acquired by Sun Microsystems), not only because it is freely available as Open Source Software and runs on Windows, Linux and Macintosh but also because it has great features and supports a large number of guest operating systems.
Last Saturday I used VirtualBox to create a new virtual machine (VM) running Windows XP Pro and Oracle Database 11gR1. First, I created a “base” VM with only Windows XP pro SP3 installed. I then detached the virtual disk file (VDI) from the VM. I ended up with a VDI file that I can clone as many times as I want eliminating the need to install a new operating system every time I create a new VM.
Cloning a virtual disk in VirtualBox is done using the command line. For example, to clone WindowsXP.vdi as a new virtual disk called WindowsXPProOraDB11gR1.vdi, you would issue this command:
VBoxManage clonevdi WindowsXP.vdi WindowsXPProOraDB11gR1.vdi
You would then assign WindowsXPProOraDB11gR1.vdi as the virtual hard drive of a new virtual machine.
The installation of Oracle Database 11gR1 on a new Windows XP VirtualBox VM on my laptop went very smoothly, but I had to troubleshoot a couple of things on the VM: A missing loopback adapter and a 100% CPU usage.
My laptop and the newly created VM do not have a static IP address. Dynamic Host Configuration Protocol (DHCP) is used to assign dynamic IP addresses on the network. According to the documentation, before installing Oracle Database onto a computer that uses the DHCP protocol, you need to install a loopback adapter to assign a local static IP address to that computer. I followed the instructions found in the Oracle Database Pre-installation Requirements document to install the loopback adapter. After that, the database installed without any issues.
Now that my WinXP VM and 11g Database are up and running, I noticed that the oracle.exe process was consuming 100% of the CPU. I waited a few minutes, but the CPU usage did not go down, it stayed at 100%. After a quick search, I found these two forum posts: post 1 and post 2. Since this is a test database, I did not hesitate to follow the instructions in post 2 and was able to bring the CPU usage down to a normal level.
Virtual machines are a great way to learn and try new software and applications without the need to buy new hardware or messing up your existing computer. You may even have fun embarking on some virtual adventures.
2 Comments | Filed in Oracle, Technology, Tips | Tags: 11g, virtual-pc, virtualbox, virual machine
Last Sunday the geek in me wanted to learn something new. So, I went ahead and got started with iPhone development. I wanted to build something simple yet useful. I started at 4:30 PM and by around 8:15 PM an iPhone optimized version of OraNA.info was born.
The following is a short video demonstration of OraNA on my iPhone, which should also work on the iPod touch:
To browse OraNA on your iPhone, visit oradot.com/i/orana/.
Quick tip: If you want to always browse a specific category, you can bookmark the category page.
This is just the beginning. I have a few ideas for more iPhone goodness. I just need to learn some advanced techniques and of course find the time to do it.2 Comments | Filed in Oracle, Technology | Tags: aggregator, blog, iphone, ipod
You can subscribe to my feed here. FriendFeed is great. I like it. It is currently in private beta testing. However, if you’re interested, just leave a comment below and I’ll send you an invite.
Speaking of twitter, I’m starting to like it more. You really have to pick the right friends you follow, otherwise you’ll be overwhelmed by useless chatter. Too bad my employer has blocked twitter, but that’s not a problem. I use:
I use twitterfeed in many different ways, like for example posting photo tweets from my iPhone to Flickr->twitter. I also publish my blog feed to my twitter account. Moreover, OraNA, Oracle and OOW twitter accounts use twitterfeed as well.
There are many other twitter applications, but the ones above are my favorites.8 Comments | Filed in Technology | Tags: friendfeed, twitter, web2.0
Google Gears provides three key features:
Apart from the coolness and usefulness of Gears (I can now read my Google Reader feeds offline), what also caught my attention was its use of a database to store and access data. After all, that’s what databases are good at, data storage and management. I was curious to know what type of a database Gears uses. Well, according to its database module API, Google Gears uses the open source SQLite database system.
SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.
SQLite is really interesting. There is no set up procedure to initialize it before using it. Databases need minimal or no administration. There is no need to maintain a separate server process dedicated to SQLite. It supports ACID and is thread-safe.
SQLite supports a large subset of SQL-92 data definition and manipulation features. You can create tables, indexes, triggers, and views. You can manipulate stored information using INSERT, DELETE, UPDATE, and SELECT SQL constructs. However, some SQL-92 features are not yet supported.
SQLite stores an entire database in a single, ordinary native file that can reside anywhere in a directory of the native file system. Any user who has a permission to read the file can read anything from the database.
What’s also interesting about SQLite is its size. The whole code footprint ranges from 224KB up to 513KB depending on what compiler optimizations are used. I downloaded the pre-compiled SQLite binaries for windows, it is just one 359KB file, sqlite3.exe.
sqlite3 is somewhat similar to Oracle’s SQL*Plus. You can use it to enter SQL commands. For example, from the DOS command prompt, the following creates a database file named eddie.db:
SQLite version 3.3.17
Enter “.help” for instructions
Now, let’s do some DML and DDL:
sqlite> create table tbl1(one varchar(10), two smallint);
sqlite> insert into tbl1 values(‘hello!’,10);
sqlite> insert into tbl1 values(‘goodbye’, 20);
sqlite> select * from tbl1;
sqlite> CREATE TABLE tbl2 (
…> f1 varchar(30) primary key,
…> f2 text,
…> f3 real
Does SQLite have a data dictionary? Yes it does, and it’s only one table called sqlite_master:
sqlite> select * from sqlite_master;
table|tbl1|tbl1|2|CREATE TABLE tbl1(one varchar(10), two smallint)
table|tbl2|tbl2|3|CREATE TABLE tbl2 (
f1 varchar(30) primary key,
Interesting. Going back to Gears, if you are wondering where the location of the database file is, it basically depends on the browser and the platform you are using.
If you are wondering what can SQLite be used for, of course, you have Google Gears as a perfect example. But, there are other appropriate uses as well.
By now, you may be thinking about Oracle Database Express Edition as also being an entry-level, small-footprint database, but hey, SQLite does not even come close to Oracle XE. Each one serves and is suitable for different types of applications. Moreover, do you really think that a 359KB RDBMS can put a dent into a 165MB RDBMS?Comments Off | Filed in Oracle, Technology | Tags: sql, sqlite, sqlplus, xe
According to this SDA Asia Magazine article:
OTN has reportedly bumped pass the four hundred thousand member point making it the largest developer community for Oracle in the Asia Pacific region and second largest worldwide… OTNâ€™s new position in the India market also translates to an increase in Oracleâ€™s total online community in the country – comprising customers, partners, students, developers, technical specialists among others – to almost seven hundred thousand members.
Even though the article does not list the source for this information, judging from the increase in the number of Oracle related websites and blogs, the online Oracle community is indeed expanding.
By the way, is MSDN the largest developer community?2 Comments | Filed in Oracle, Technology | Tags: otn