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sheppard committed Feb 4, 2014
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[![vera](https://raw.github.com/wq/wq/master/images/256/vera.png)](http://wq.io/vera)

[wq.db: vera](http://wq.io/vera) is the reference implementation of the Entity-Record-Attribute-Value ([ERAV](http://wq.io/docs/erav)) data model. ERAV is an extension to Entity-Attribute-Value (EAV) that adds support for maintaining multiple versions of an entity with different provenance [^1]. The implementation of ERAV provided by vera is optimized for storing and tracking changes to *time series data* as it is exchanged between disparate technical platforms (e.g. mobile devices, Excel spreadsheets, and third-party databases). In this context, ERAV can be interpreted to mean Event-Report-Attribute-Value, as it represents a series of *events* being described by the *reports* submitted about them by various contributors in e.g. an environmental monitoring or citizen science project.
[wq.db: vera](http://wq.io/vera) is the reference implementation of the Entity-Record-Attribute-Value ([ERAV](http://wq.io/docs/erav)) data model. ERAV is an extension to Entity-Attribute-Value (EAV) that adds support for maintaining multiple versions of an entity with different provenance [^1].

The implementation of ERAV provided by vera is optimized for storing and tracking changes to *time series data* as it is exchanged between disparate technical platforms (e.g. mobile devices, Excel spreadsheets, and third-party databases). In this context, ERAV can be interpreted to mean Event-Report-Attribute-Value, as it represents a series of *events* being described by the *reports* submitted about them by various contributors in e.g. an environmental monitoring or citizen science project.

Getting Started
===============
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