PC SOFT

ONLINE HELP
FOR WINDEV, WEBDEV AND WINDEV MOBILE

Home | Sign in | English US
  • Vocabulary linked to replication
  • Databases
  • Types of replication
  • Vocabulary linked to WDReplic
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadApple WatchUniversal Windows 10 AppWindows Mobile
Others
Stored procedures
Vocabulary linked to replication
Before implementing the replication, you must be familiar with the vocabulary specific to the replication.
Databases
The replication distinguishes between two types of databases:
  • The master database
    It is the reference database. All the updates are performed on this database:
    • modifications performed by the application run on this computer,
    • modifications performed on the remote computers and transmitted by the replication.
  • The subscriber database
    This remote database is identical to the "Master" database. The modifications performed by the remote computer are applied to this database. The replication transmits these modifications to the "master" database.
Types of replication
Two types of replication can be implemented:
  • Unidirectional replication
    This type of replication consists in performing an update from the "Master" database to the "Subscriber" databases or from the "Subscriber" database to the "Master" database.
  • Bidirectional replication
    This type of replication consists in performing an update from the "Master" database to the "Subscriber" databases and from the "Subscriber" databases to the "Master" database.
    During the subscriber-master replication, the modifications performed on the subscriber computer since the last replication will be saved on the master computer.
    During the master-subscriber replication, the modifications performed on the master computer since the last replication will be saved on the subscriber computer.
Vocabulary linked to WDReplic
WDReplic uses specific vocabulary:
  • The replication scenario
    The replication scenario is a SRP file containing the set of operations to perform to build the replication.
    For example, for a portable replication between the master replica and the subscriber replica, the scenario consists of:
    • the path of master replica,
    • the path of the portable replica (file with WDZ extension) which must be created,
    • the transmission mode of the portable replica and its characteristics (for an FTP or e-mail transmission),
    • the identifier of the subscriber site concerned by the replication,
    • the conflict management mode during replication (if two records have been modified on two machines, which modification is applied).
  • Movable replica
    File in ZIP format containing all the information needed for the replication. This file is created when the master site and the subscriber site are remote and not connected.
    During a synchronization by FTP or email, WDReplic sends the WDZ file via the specified media.
  • Identifier of Subscriber Site
    When installing a subscriber replica, this replica is associated with a (numeric or character string) identifier. This identifier is used when creating a replication scenario using portable media.
Minimum required version
  • Version 9
This page is also available for…
Comments
Click [Add] to post a comment