Featured Research

from universities, journals, and other organizations

Saving our data from digital decay

Date:
November 23, 2010
Source:
Inderscience
Summary:
An old-school alternative to digital storage has a modern spin that could save us from future information loss as technology changes and today's state of the art devices become tomorrow's museum pieces.

An old-school alternative to digital storage has a modern spin that could save us from future information loss as technology changes and today's state of the art devices become tomorrow's museum pieces.

Digital objects -- documents, images, databases -- require specific software to open and read them, which in turn requires specific operating systems, device drivers, and hardware to run them depending on the format in which they're stored, whether magnetic, optical or some other system. The pace of change in the world of technology is so rapid that applications as well as media technology have only short life spans and archived data has to be migrated at frequent intervals on to new data carriers and into new file formats to maintain its integrity. For instance, data that once might have been held on magnetic tape or floppy disks is unreadable on today's equipment and CD-ROMs and other media will go the same route in the future.

If the 0s and 1s of digitised information can succumb to the vagaries of technological change, one thing is certain, analogue archives will always be readable to future generations provided they retain language skills. After all, we can read the works of modern authors almost as readily as the words of Shakespeare and Chaucer and ancient hieroglyphics bear close scrutiny once we cracked the code. With this point in mind, Steffen Schilke of the Gemeinsame IT-Stelle der hessischen Justiz in Frankfurt am Main in Germany and Andreas Rauber of the Department of Software Technology and Interactive Systems, Vienna University of Technology, in Austria discuss how e-government archives might be safely stored using an alternative to digital media -- the microfilm format beloved of spy fiction.

Writing in the International Journal of Electronic Governance, the team explains how e-government applications have to archive data or documents for long retention periods of 100 years or more for legal reasons and also such materials are often worthy of storage for future historians. They and many others have recognised the problems of storing such materials in digital media and suggest that in terms of cost, stability and technology independence, microfilm offers a promising solution for "off-line" storage.

The team has carried out a feasibility study that analysed encoding techniques to allow digital data to be saved on to microfilm and then to test data recovery as well as cost issues. Aside from precluding the need for frequent technology updates, storage of documents and data on microfilm will give future generations access to the information by scanning the microfilm into whatever system they are currently using and applying optical character recognition to re-digitize und subsequently decode the data.

The team further suggests that in order to reduce the amount of microfilm used for any given repository and so cut conversion and re-digitization times it would be possible to convert a stream of text into a bar-code type system that would still be entirely analogue but would rely on knowledge of the conversion key to return the data to digital form from microfilm. Using such a system could render a tested 170 kilobyte file that requires 191 pages of microfilm space as just 12 or so "printed as a two-dimensional barcode. Such a barcode would incorporate redundancy and be self-checking unlike a straight digital to analogue image scan of the text. Further compression is possible, if colour microfilm and barcodes were used for storage. This may provide a valuable, low-maintenance additional back-up for the original digital objects in addition to preservation activities needed for the on-line access copies.

For microfilm data storage, no tapes, no spinning discs, no electronic devices are needed and the only precautions necessary for the storage of the microfilm is a dry, temperature-controlled and locked closet or even just a hermetically sealed box. "The advantage of such a method is clearly the 'don't care' factor for the media migration," the team asserts, "With a lifetime of more than 100 years a lot of media migration projects (which are usually necessary every 3 to 7 years) could be avoided, saving money, effort, and precluding the risk of data loss as technology diverges away from today's standards."


Story Source:

The above story is based on materials provided by Inderscience. Note: Materials may be edited for content and length.


Journal Reference:

  1. Steffen W. Schilke, Andreas Rauber. Long-term archiving of digital data on microfilm. International Journal of Electronic Governance, 2010; 3 (3 ): 237-253 DOI: 10.1504/IJEG.2010.036900

Cite This Page:

Inderscience. "Saving our data from digital decay." ScienceDaily. ScienceDaily, 23 November 2010. <www.sciencedaily.com/releases/2010/11/101116072749.htm>.
Inderscience. (2010, November 23). Saving our data from digital decay. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2010/11/101116072749.htm
Inderscience. "Saving our data from digital decay." ScienceDaily. www.sciencedaily.com/releases/2010/11/101116072749.htm (accessed October 23, 2014).

Share This



More Computers & Math News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Reuters - Innovations Video Online (Oct. 22, 2014) — Inspired by the way a chameleon changes its colour to disguise itself; scientists in Poland want to replace traditional camouflage paint with thousands of electrochromic plates that will continuously change colour to blend with its surroundings. The first PL-01 concept tank prototype will be tested within a few years, with scientists predicting that a similar technology could even be woven into the fabric of a soldiers' clothing making them virtually invisible to the naked eye. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Internet of Things Aims to Smarten Your Life

Internet of Things Aims to Smarten Your Life

AP (Oct. 22, 2014) — As more and more Bluetooth-enabled devices are reaching consumers, developers are busy connecting them together as part of the Internet of Things. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Free Math App Is A Teacher's Worst Nightmare

Free Math App Is A Teacher's Worst Nightmare

Newsy (Oct. 22, 2014) — New photo-recognition software from MicroBlink, called PhotoMath, solves linear equations and simple math problems with step-by-step results. Video provided by Newsy
Powered by NewsLook.com
Rate Hike Worries Down on Inflation Data

Rate Hike Worries Down on Inflation Data

Reuters - Business Video Online (Oct. 22, 2014) — Inflation remains well under control according to the latest consumer price index, giving the Federal Reserve more room to keep interest rates low for awhile. Bobbi Rebell reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins