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Added details about mnesia, an integral DBMS for Erlang programming. (#18510) 

* Update index.md

* Update index.md
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karanbhomiagit 2018-10-15 01:23:52 +05:30 committed by Quincy Larson
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@ -64,6 +64,17 @@ Output:
"Hello Beth."
```
### Mnesia
mnesia is a distributed database management system written in Erlang and highly compatible with Erlang processes.
The following are some of the most important and attractive capabilities provided by Mnesia:
* A relational/object hybrid data model.
* Persistence. Tables can be coherently kept on disc and in the main memory.
* Replication. Tables can be replicated at several nodes.
* Atomic transactions. A series of table manipulation operations can be grouped into a single atomic transaction.
* Extremely fast real-time data searches.
### Try it out
There are websites where you can try running Erlang commands without having to install anything locally, like these: