---
title: Business
summary: API reference for Business.
status: draft
owner: SAIF.Core documentation team
last_reviewed: 2026-09-24
library: SAIF.Data
reference_type: package
---

# Business

Domain entity representing Business data within the policies area of the claims/policy domain, mapped for NHibernate persistence.*

## Purpose
- Models business data used by the policies area of this library.*
- Inherits shared identity/lifecycle behavior from `EntityBase`.

## Context
- Namespace: `SAIF.Data.Model.Policies`
- Assembly/package: `SAIF.Data`

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| PolicyNumber | `long PolicyNumber { get; set; }` | Value of policy number exposed by this type.* |
| BusinessId | `long BusinessId { get; set; }` | Foreign-key identifier referencing the related business record.* |
| EffectiveDate | `DateTime EffectiveDate { get; set; }` | Date/time value for effective date.* |
| ExpirationDate | `DateTime? ExpirationDate { get; set; }` | Date/time value for expiration date.* |
| FederalEmployerId | `string FederalEmployerId { get; set; }` | Foreign-key identifier referencing the related federal employer record.* |
| IsPrimaryBusiness | `bool IsPrimaryBusiness { get; set; }` | Indicates whether primary business.* |
| Equals | `bool Equals(object obj)` | Performs the `Equals` operation.* |
| GetHashCode | `int GetHashCode()` | Retrieves hash code.* |

## Behavioral notes
- Properties are typically declared `virtual` to support NHibernate lazy-loading proxies (see the corresponding mapping file under `Data/SAIF.Data.NHibernate`).*

## Constraints and usage notes
- No additional usage constraints beyond standard NHibernate entity/DTO conventions could be confirmed from static analysis.**

> **Note:** Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts. Statements marked with ** could not be confirmed; treat as unknown until verified.

## Sources
- `Data/SAIF.Data/Model/Policies/Business.cs`