Watermark (data synchronization)
Encyclopedia
Watermark describes an object of a predefined format which provides a point of reference for two systems/datasets attempting to establish delta/incremental synchronization
; any object in the queried data source which was created, modified/changed, and/or deleted after the watermark value was established will be qualified as "above watermark" and could/should be returned to a delta-querying partner
, Active Directory
, Active Directory Application Mode (ADAM), and Microsoft Identity Integration Server
2003/ Microsoft Identity Lifecycle Manager Server 2007, as well as Cisco Unified Communications Manager or Sun Microsystems
IPlanet
and other LDAP
-based directory products are using DirSync and consequently will consume "watermark" object to provide efficient synchronization between directories. Watermark object sometimes can be referred as "cookie".
DirSync control implementation can differ from product to product, however concept of watermark will allow any product to read changes in the directory incrementally.
Data synchronization
Data synchronization is the process of establishing consistency among data from a source to a target data storage and vice versa and the continuous harmonization of the data over time. It is fundamental to a wide variety of applications, including file synchronization and mobile device...
; any object in the queried data source which was created, modified/changed, and/or deleted after the watermark value was established will be qualified as "above watermark" and could/should be returned to a delta-querying partner
Methodology
Watermark term is often used in Directory Synchronization software development projects. For example products such as Microsoft Exchange ServerMicrosoft Exchange Server
Microsoft Exchange Server is the server side of a client–server, collaborative application product developed by Microsoft. It is part of the Microsoft Servers line of server products and is used by enterprises using Microsoft infrastructure products...
, Active Directory
Active Directory
Active Directory is a directory service created by Microsoft for Windows domain networks. It is included in most Windows Server operating systems. Server computers on which Active Directory is running are called domain controllers....
, Active Directory Application Mode (ADAM), and Microsoft Identity Integration Server
Microsoft Identity Integration Server
Microsoft Identity Integration Server is an identity management product offered by Microsoft. It is a service that aggregates identity-related information from multiple data-sources...
2003/ Microsoft Identity Lifecycle Manager Server 2007, as well as Cisco Unified Communications Manager or Sun Microsystems
Sun Microsystems
Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...
IPlanet
IPlanet
iPlanet was a product brand that was used jointly by Sun Microsystems and Netscape Communications Corporation when delivering software and services as part of a non-exclusive cross marketing deal that was also known as "A Sun|Netscape Alliance"....
and other LDAP
Lightweight Directory Access Protocol
The Lightweight Directory Access Protocol is an application protocol for accessing and maintaining distributed directory information services over an Internet Protocol network...
-based directory products are using DirSync and consequently will consume "watermark" object to provide efficient synchronization between directories. Watermark object sometimes can be referred as "cookie".
DirSync control implementation can differ from product to product, however concept of watermark will allow any product to read changes in the directory incrementally.
See also
- Watermark (disambiguation)Watermark (disambiguation)Watermark can refer to:* Watermark, a recognizable image or pattern in paper used to identify authenticity-Digital watermarks and digital security:* Digital watermarking, a technique to embed data in digital audio, images or video...
- Microsoft Active Directory
- Microsoft Identity Integration ServerMicrosoft Identity Integration ServerMicrosoft Identity Integration Server is an identity management product offered by Microsoft. It is a service that aggregates identity-related information from multiple data-sources...
- High watermark (computer security)