file updating - Hutchinson encyclopedia article about file updating Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,750,624,160 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

file updating

    0.02 sec.

file updating

In computing, reviewing and altering the records in a file to ensure that the information they contain is accurate and up-to-date. Three basic processes are involved: adding new records, deleting existing records, and amending existing records.

The updating of a direct-access file is a continuous process because records can be accessed individually and changed at any time. This type of updating is typical of large interactive database systems, such as airline ticket-booking systems. Each time a ticket is booked, files are immediately updated so that double booking is impossible.

In large commercial applications, however, millions of customer records may be held in a large sequentially ordered file, called the master file. Each time the records in the master file are to be updated (for example, when quarterly bills are being drawn up), a transaction file must be prepared. This will contain all the additions, deletions, and amendments required to update the master file. The transaction file is sorted into the same order as the master file, and then the computer reads both files and produces a new updated generation of the master file, which will be stored until the next file updating takes place.



How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Email
Feedback
?Sign in SSL protected
Email:
Password:
Register

? Mentioned in ? References in periodicals archive
 
File updates are dramatically faster by employing LapLink's patented SpeedSync(TM) file updating technologies, which only transfer the changes to an updated file, thus saving significant time and bandwidth.
File updates are dramatically faster by employing LapLink's patented "SpeedSync" file updating technologies, which only transfer the changes to an updated file, thus saving significant time and bandwidth.
File updates are dramatically faster by employing LapLink's patented "SpeedSync" file updating technologies.
 
Hutchinson browser? ? Full browser
 
 
Hutchinson Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.