In database management, the ability to keep distributed databases synchronized by routinely copying the entire database or subsets of the database to other servers in the network.
There are various replication methods. Primary site replication maintains the master copy of the data in one site and sends read-only copies to the other sites. In a workflow environment, the master copy can move from one site to another. This is called "shared replication" or "transferred ownership replication." In symmetric replication, also called "update-anywhere" or "peer-to-peer replication," each site can receive updates, and all other sites are then updated. Failover replication, or hot backup, maintains an up-to-date copy of the data at a different site for backup. See mirroring, disaster recovery and distributed database.
There are various replication methods. Primary site replication maintains the master copy of the data in one site and sends read-only copies to the other sites. In a workflow environment, the master copy can move from one site to another. This is called "shared replication" or "transferred ownership replication." In symmetric replication, also called "update-anywhere" or "peer-to-peer replication," each site can receive updates, and all other sites are then updated. Failover replication, or hot backup, maintains an up-to-date copy of the data at a different site for backup. See mirroring, disaster recovery and distributed database.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Next year is THE year for cloud computing
- Here is what Indu Kodukula, CTO of SunGard Availability Services thinks how cloud computing is likely to transform the computing industry landscape in 2010. Commentary - Yogi Berra had it right - it?s difficult to make predictions, especially about the future. It?s especially difficult...
- News items 2009-11-17
- Five Cellular Automata 7.60 (Windows)
- This is software for exploring five cellular automata, as follows: A multistate version of Conway's Game of Life, called "q-state Life"; A simulation of the Belousov-Zhabotinsky chemical reaction in which, beginning from a random state of the system, spirals and curlicues "spontaneously" emerge; A process called Togetherness in which cells...
- Software downloads 2009-11-11
- 40 years ago the Internet was born - now it devalues everything it touches
- you are devaluing your proffesionshame on you.internet is one of the greatest invention in human history.Establishing walled islands on the InternetThe Internet is like a huge river, or better yet, sea, that allows users to move from small island to small island web application, to find the things they care...
- Discussion threads 2009-10-29
- JumpBox for the PostgreSQL Relational Database Management System 1.1.5 (Mac)
- PostgreSQL is a powerful, open source object-relational database system that's been under active development for over 15 years. An enterprise class database, PostgreSQL boasts sophisticated features such as Multi-Version Concurrency Control MVCC, point in time recovery, tablespaces, asynchronous replication, nested transactions savepoints, online/hot backups, a sophisticated query planner/optimizer, and write...
- Software downloads 2009-10-29
- JumpBox for the PostgreSQL Relational Database Management System 1.1.5 (Windows)
- PostgreSQL is a powerful, open source object-relational database system that's been under active development for over 15 years. An enterprise class database, PostgreSQL boasts sophisticated features such as Multi-Version Concurrency Control MVCC, point in time recovery, tablespaces, asynchronous replication, nested transactions savepoints, online/hot backups, a sophisticated query planner/optimizer, and write...
- Software downloads 2009-10-29
- Network File Monitor Pro 2.32.13 (Windows)
- Data replication, backup and synchronization software for networks. Has flexible scheduler settings and numerous functions: file copying and moving inside LAN, HTTP, FTP and E-mail file transfer, launching programs, sending message between computers, sending E-mail messages. Works as Windows NT service. Network File Monitor Professional is a powerful data replication,...
- Software downloads 2009-10-26
- SQL Server Surveyor 1.2.5.11 (Windows)
- SQL Server Surveyor is a tool which allows database administrators to easily create reports of their SQL Servers for the purposes of documentation, auditing, comparison with other servers, etc. Report Features: Version of SQL Server and operating system; Licensing; Collation; Uptime; Network configuration; Disk information; SQL Server statistics; Linked servers;...
- Software downloads 2009-10-23
- Bang & Olufsen tries to make land-line phones cool again with BeoCom 5
- No one wants a land-line anymore for other reasons1. The landline service is too expensive considering that all the 'infrastructure' is already there for them. $30 dollars a month is VERY expensive for a landline, and that's why my family is thinking of dropping ours.2. Cell phones are simply more...
- Discussion threads 2009-10-21
- In the aftermath of the T-Mobile Chernobyl
- T-Mobile's Sidekick/Danger Inc. meltdown has far-reaching implications for wireless carrier data integrity responsibilities way beyond any immediate remediation the company may need to offer its customers. Yesterday, T-Mobile notified all of its Sidekick device customers that a failure which occurred on Microsoft's Danger,...
- Blog posts 2009-10-12
- Mosoo Software File Replication 3.3 (Windows)
- File Replication is a very fast and robust files and folders replication software for Windows. It compares time stamps and file sizes between the source file and the corresponding destination file and automates the replication of data between desktop PCs, laptops, and USB drives. File Replication not only replicates files...
- Software downloads 2009-10-08
- Batch & Print Pro 3.05 (Windows)
- Batch & Print Pro is for batching documents as retainable lists, which can be automatically printed in, document sequence of your choice. All associated shell printable documents are supported, PDF, MS Word, HTML, text files, image formats, Excel spreadsheets, PowerPoint presentations. Batch & Print Pro software monitors the spool queue...
- Software downloads 2009-10-06
- Software Vendor Speeds Deployment of Web-Based Applications by Up to 75 Percent
- RepliWeb - an independent software vendor focused on optimizing Web deployment and content replication processes - wanted to ensure that its products supported the most current operating system technology. As a result, it implemented Windows Server 2008 R2 and is taking advantage of new Internet Information Services 7.5 features to...
- Case studies 2009-10-01
- DBSync for Firebird and MS SQL 1.0.1 (Windows)
- DBSync for Firebird and MS SQL is a database synchronization tool which performs two-way conversion and synchronization from Firebird databases to MS SQL server and from MS SQL to Firebird. The tool is also applicable for MS SQL database replication to another MS SQL database and is quite adept at...
- Software downloads 2009-09-29
- Light Peak fiber optic connector to replace Firewire, USB, monitor cables
- 100 Gbps is a pretty conservative estimate...100 Gbps is a pretty conservative estimate because the theoretical maximum throughput on fiber optic is however fast the hardware is on either end of the cable.Developed by Intel, not AppleWhile it appears that Apple may have been important in inspiring this particular standard,...
- Discussion threads 2009-09-28
- AnyDbTest 2.3 (Windows)
- AnyDbTest is the first automated DB unit testing tool available using Xml as test case. AnyDbTest is just designed for DBA/DB developers. It supports all kinds of popular database, such as Oracle, SQL Server, and MySQL. AnyDbTest can also be used to validate the replication, ETL, DTS & SSIS result....
- Software downloads 2009-09-28
- What if Windows 8 was touch-input only?
- Touch not on my screenI hate finger prints on my TV, PC monitor and laptop.I could see having this as a add on but for the most part I am not for it.It is good for small device and a segment of handicap users but, really it is idea for...
- Discussion threads 2009-09-24
- RSI DataSync 2009.9.0 (Windows)
- Are you tired of poor or slow ODBC connections to your MAS90/200 data? RSI DataSync provides a solution. Using advanced database replication technology, RSI DataSync synchronizes your MAS90/200 company information to an external Microsoft SQL Server database. This enables you to write queries and reports that execute against a true...
- Software downloads 2009-09-15
- AggreGate Network Manager for Windows 4.30.01 (Windows)
- AggreGate Network Manager is an enterprise-grade network management and monitoring platform. It tightly integrates with other smart building management systems, such as physical access control, HVAC, lighting, and time/attendance control. The system has common scalable architecture based on the core of AggreGate Device Management Platform, providing unique abilities for...
- Software downloads 2009-09-09
- Mobiaccess Development Framework 3.0 (Mobile)
- Mobiaccess Development Framework Mobiaccess - One solution for all platforms! Mobiaccess is a mobile development framework that enables developers to easily create mobile applications for data collection without extensive knowledge on mobile development. It handles data replication mobiSync and data visualization mobiVision as well. What can Mobiaccess Development Framework offer...
- Software downloads 2009-09-07
- Mobiaccess Development Framework 3.0 (Mobile)
- Mobiaccess Development Framework Mobiaccess - One solution for all platforms! Mobiaccess is a mobile development framework that enables developers to easily create mobile applications for data collection without extensive knowledge on mobile development. It handles data replication mobiSync and data visualization mobiVision as well. What can Mobiaccess Development Framework offer...
- Software downloads 2009-09-07
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- The best support in the Linux business
-
If Linux is going to power your mission-critical applications, you'd better have the best support known to business. Novell was rated the top provider of Linux technical support.
- Learn more >>
- The more you simplify, the more you save
-
When you transition from your existing Red Hat environment to SUSE Linux Enterprise from Novell, you can recognize dramatic cost savings, perhaps as much 50%
- Learn more >>
- New Online Dashboard for IT Leaders
-
Read about top issues IT decision-makers face every day, plus get cost-effective solutions to real-life IT problems.
- Learn more >>
- Reduce risk. Reduce complexity. Increase reliability.
-
A simplified IT environment isn't just less complex. It's also more reliable. Standardize on a single Linux platform with SUSE Linux Enterprise from Novell, and get the world's most interoperable Linux
- Learn more >>
SmartPlanet
- Thought-provoking progressive ideas on diverse topics that intersect with technology, business, and life, and matter to the world at large. Visit SmartPlanet
- More from IBM
-
- Can your business work smarter? Learn more about Lotus Symphony
- Learn how to work smarter and optimize cost using the IBM Smart SOA approach Download the eBook
- Smarter ways to make smarter products Read the brief from IBM
