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Don't Count Cobol Out
Hugh Pickens writes "Although Turing Award-winning computer scientist Edsger Dijkstra once said, 'the use of Cobol cripples the mind; its teaching should, therefore, be regarded as a criminal offense,' Michael Swaine has an interesting entry to Dr. Dobb's Journal asserting that Cobol is the most widely used language in the 21st century, critical to some of the hottest areas of software development today, and may be the next language you'll be learning. In 1997, the Gartner Group estimated that there were 240 billion lines of Cobol code in active apps, and billions of lines of new Cobol code are being written every year. Cobol is a key element in the realization of modern distributed business software architecture concepts — XML/metadata, Web Services, Service Oriented Architecture — and e-business."
I absolutely agree. There is a lot of new COBOL being written, but it is usually done to enhance existing systems.
I am currently on a project at a major insurer on a system that is about 90% COBOL. Over the nextre year most of the Batch functionality will be replaced with smaller Real-time enabled called routines running as headless transactions in a CICS region.
The code base will be greatly reduced because the majority of the field validation is being moved into the new front end web app from the old COBOL based CICS green screens and the Nightly batch routines. The COBOL code will just wait for messages to show up over the Queue and either update, create, read or delete things in DB2.
The software system is really pretty robust for a Mid-80's era design. It has no central database, each separate portion of the company processes transactions in a distributed peer to peer fashion. Quite advanced for mainframe systems of any era let alone when PC's were just breaking into the 16 bit cpu and greater than 640 k era.
Mainframes are much cheaper now as well. The models produced by IBM today run on air cooled power PC CMOS design chips and start in the $300K range (and go way up). Paying for comparable computing power on an Intel based platform would cost less, but if you start demanding the 9 nine's of uptime that mainframes deliver the cost of the high availability Intel based machines goes way up and you get into the $250K range.
People used to believe that 'network' computing would kill the mainframe. Now the mainframe is just a part of the network.
Dear younglings (or oldlings):
If you want a REAL challenge, forgot cobol. Try programming an Atari 2600 gaming console. You have just 128 bytes of RAM to create a playable video game. (No that was not a typo... 128 bytes.)
I tried it once.
I gave up.
It gave me new respect for the original Atari geniuses who created playable versions of Space Invaders, Missile Command, Cosmic Ark, and Jr. Pacman, and turned a cheap console into the #1 system of its day (1977-to-1984).
The government is not your daddy. Its purpose is not to raid middle-class neighbors' wallets and give it to you.
Anecdotal.
Properly written COBOL is as flexible as anything else.
Badly written COBOL isn't flexible--just like every other language.
"COBOL isn't very quick to write, what can be done in 50 lines of COBOL can be done in 30 lines of C, and about 20 lines of Python or Java."
and 1 line in perl.
Where do you get your numbers. I can do things in 20 lines of COBOL that would take 100's of lines in C.And it performs faster then those languages. When you are doing millions of financial calculations and hour, you need reliability and rock solid performance.
The Kruger Dunning explains most post on
Yes and no. In the financial industry, for example, COBOL mainframes hang on primarily because their reliable.
BS. In the financial industry COBOL mainframes hang on because they're PAID FOR.
Almost. The mainframes are definitely not paid for (we continue to lease and upgrade our mainframes), but the COBOL code is.
Mainframes hang on because they have a huge legacy base of working code. Replacing all that is seen as a giant expensive effort for no immediate gain. And because we have more and more work to do with that data, we keep adding more and more code to the legacy base.
It'll take a mandate from on high to get us to stop adding to the morass. And that's not forthcoming, because honestly the COBOL work is still as cheap as anything else, especially for the giant record-oriented processing work that we ask of the beasts. They may not be glamorous, but their ugliness is well understood, and has a stable price tag.
John