Web Service Data Capture Approaches in web designing – Codeshoppy
This research is investigating the claim that Change Data Capture (CDC) technologies capture data changes in real-time. Based on theory, our hypothesis states that real-time CDC is not achievable with traditional approaches (log scanning, triggers and timestamps). Traditional approaches to CDC require a resource to be polled, which prevents true real-time CDC. We propose an approach to CDC that encapsulates the data source with a set of web services. These web services will propagate the changes to the targets and eliminate the need for polling. Additionally we propose a framework for CDC technologies that allow changes to flow from source to target. This paper discusses current CDC technologies and presents the theory about why they are unable to deliver changes in real-time. Following, we discuss our web service approach to CDC and accompanying framework, explaining how they can produce real-time CDC. The paper concludes with a discussion on the research required to investigate the real-time capabilities of CDC technologies.
Change Data Capture (CDC) is used to identify changesmade to data in a database or data store, so that thesechanges can be propagated across a network to other systemsthat need to know about the changes. Change data capture isused in real-time data warehousing and for event-drivenarchitectures . We can think of several other applicationswhere CDC could be used such as, database replication ormirroring, live data monitoring for statistical analysis andlive monitoring on credit card or telephone records for fraudanalysis and detection.
There are a variety of methods for doing CDC, suchas log-scanning, setting up triggers inside the DBMS andplacing timestamps on records. It is claimed that these CDCapproaches can capture changes in real-time [3]. However,in this paper we argue that this is a false claim. True real-time CDC is where there is close to zero delay betweenthe change occuring in the source database and the changearriving at the target destinations. Android Projects – Project Center in Kumbakonam
he research for this PhD is to ivestigate the claim thatCDC technologies can deliver changes in real-time. We firstpropose the theory as to why current CDC approaches areunable to deliever real-time changes.
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