| Table: Interaction_Type | |||||||||||||||
| SYSTEM TABLE: Defines the types of interactions that can be stored in the Interaction table. Tags: read-only Content:
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| Columns | |||||||||||||||
| Name | Type | Constraints | Description | ||||||||||||
| interaction_type_KEY | tinyint (3) | NOT NULL | A unique value assigned to this row so that linking to this row uses only 1 byte. Stored as an Int8 to save storage space on the millions of Interaction rows. | ||||||||||||
| description | nvarchar (30) | NOT NULL | Description (unique). | ||||||||||||
| Primary key | |||
| Name | Columns | Description | |
| PK_Interaction_Type$interaction_type_KEY | interaction_type_KEY | CLUSTERED | |
| Unique constraints | |||
| Name | Columns | Description | |
| UK_Interaction_Type__description | description | Each description must be unique. | |
| Incoming foreign keys | |||
| Name | Columns | Referencing table | Description |
| FK_Interaction_Subtype__Interaction_Type__interaction_type_KEY | interaction_type_KEY | Interaction_Subtype | |