InternetNews.com - Webopedia: Online Dictionary for Computer and Internet Terms
 


   

Partner With Us
















Enter a keyword...
...or choose a category.

database management system
Last modified: Tuesday, September 21, 2004  

A collection of programs that enables you to store, modify, and extract information from a database. There are many different types of DBMSs, ranging from small systems that run on personal computers to huge systems that run on mainframes. The following are examples of database applications:
  • computerized library systems
    • automated teller machines
  • flight reservation systems
    • computerized parts inventory systems

    From a technical standpoint, DBMSs can differ widely. The terms relational, network, flat, and hierarchical all refer to the way a DBMS organizes information internally. The internal organization can affect how quickly and flexibly you can extract information.

    Requests for information from a database are made in the form of a query, which is a stylized question. For example, the query

    SELECT ALL WHERE NAME = "SMITH" AND AGE > 35

    requests all records in which the NAME field is SMITH and the AGE field is greater than 35. The set of rules for constructing queries is known as a query language. Different DBMSs support different query languages, although there is a semi-standardized query language called SQL (structured query language). Sophisticated languages for managing database systems are called fourth-generation languages, or 4GLs for short.

    The information from a database can be presented in a variety of formats. Most DBMSs include a report writer program that enables you to output data in the form of a report. Many DBMSs also include a graphics component that enables you to output information in the form of graphs and charts.

    Related Categories
  • Databases
  • Related Terms
  • aggregate function
  • BLOB
  • data dictionary
  • data independence
  • data mart
  • data migration
  • database
  • database engine
  • DB2
  • distributed database
  • drill down
  • EAI
  • ETL
  • flat-file database
  • fourth-generation language
  • hypertext
  • Informix
  • ISAM
  • multidimensional DBMS
  • OLAP
  • Oracle
  • Progress Software
  • query
  • RDBMS
  • report writer
  • resource locking
  • schema
  • SQL
  • stored procedure
  • trigger
  • database management system DBMS Products :


    Top Store Offers:
    eCOST.com  1534.99Pervasive PSQL v.9.0 Server for NetWare - Upgrade - DBMS - 20 User - Version Upgrade - Standard - PC
    Checkout Software.com  2250.00Business today demands a different kind of data management solution. Performance, scalability, and reliability are essential, but businesses now expec...
    Amazon Marketplace  799.95Platforms: Windows NT Windows 2000 Linux Unix Mac Windows 95 Windows 98 Windows Me
    eCOST.com  5799.99Pervasive PSQL v.9.0 Server for NetWare - Upgrade - DBMS - 100 User - Version Upgrade - Standard - PC
    Dell SMB  329.99With its local cursor engine, tight coupling between language and data, and powerful features, Visual FoxPro is a great tool for building database sol...

    Compare all matches:
    0 Store Offers
     
    Related Links

    Oracle Corporation home page 
    The Oracle home page provides links to their line of products and solutions, corporate information and news, support, education, events, and partner information.

    KB Systems home page
    KB (Knowledge Based) Systems is a provider of relational database management tools for the M application development and user community. This home page offers links to their products and services, company information, and related Web links.

    Object Database Management Group
    Offers information about ODMG, a consortium of database management system vendors who are working on progressing specific standards of customer software across DBMS products. There are also direct links to more detailed information about ODMG.

    Database Journal
    An excellent resource for database professionals.


    Add internetnews.com
    to your browser search box.

    IE 7 | Firefox 2.0 | Firefox 1.5.x

    Receive news
    via our XML/RSS:
    feed

    More InternetNews.com


    Hardware Software Mobility Web Content
    Search Government Developer Business
    Storage E-Commerce Networking Security



    internet.commediabistro.comJusttechjobs.comGraphics.com

    Search:

    WebMediaBrands Corporate Info

    Legal Notices, Licensing, Reprints, Permissions, Privacy Policy.
    Advertise | Newsletters | Shopping | E-mail Offers | Freelance Jobs