# Apache Jena - Database Operating Environment

"DBOE" is a set of database-related components. It includes:

* Transaction Coordination
* Copy-on-write data structures
* Query algebra evaluation library
* Abstraction of basic file operations

TDB2 is a reworking for TDB that provides scalable transactions as well
as refining the machinary for reliability.

License: Apache License 

See [LICENSE](LICENSE) and [NOTICE](NOTICE) for details.

Notes on using [TDB2 in a Java application](use-tdb2.md).

Notes on using [TDB2 from the command line](use-tdb2-cmds.md).

Notes on using [TDB2 with Apache Jena Fuseki](use-fuseki-tdb2.md).
