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Next message sonia  posted on Friday, September 11, 2009 - 06:57 am
How do I link database with DDS library???
When I don't want to use relational database or XML as my DBMS..
then is there any alternative way to store data??
Next message Hans van 't Hag  posted on Friday, September 11, 2009 - 01:10 pm
Hi Sonia,

Multiple DDS implementations support 'plugins' that allow a transparent 'replication' of information in DDS to/from a 3rd-party external DBMS system. Typically thats transparent for DDS applications.

Using an external DBMS is in any case optional and since DDS itself also behaves like a (distributed) database (having the notion of 'keys' that can model relationships between topics, and supporting SQL-like queries and content-filters and where PERSISTENCY-QoS allows to really 'persist' information on disks), there might be no need at all to add a DBMS.

Where you see a DBMS being used in the DDS-context is often related to having a logging-capability or injecting persistent-data sets. There are also usecases where this DDS/DBMS coupling is used as a means to replicate DBMS's in real-time (i.e. where DDS is transparently used as the QoS-driven) replication mechanism)
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