> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Datastore (reference implementation)

This section describes how the [SA datastore schema](../../../../../../datastore/standardisedapproach/index) is used for the CSR Sec CTP risk class.

The schema starts with the [SaSensitivities](./base) store, which is an index of all the facts in the SA Cube.
The **SaSensitivities** store has references to the risk-factor descriptions and sensitivities.

### Risk Factor Descriptions

The [risk-factor](../data-model-core/risk-factor) description starts with the [RiskFactorDescription](./risk-factor-desc) store,
which contains the description of risk-factor independent of the [underlying](../data-model-core/underlying),
and a reference to the [UnderlyingDescription](./underlying-desc) store for a description of the underlying.

The **UnderlyingDescription** store references the [CSRBucketDesc](./csr-bucket-desc) store for the bucket descriptions.

### Sensitivities

The sensitivities stores contain the sensitivity values, they are referenced from the **SaSensitivities** store.

| Risk Measure | Sensitivity Store   |
| ------------ | ------------------- |
| Delta        | [Delta](./delta)    |
| Vega         | [Vega](./vega)      |
| Curvature    | [Curvature](./curv) |