Table: Activity_Category
Columns
Name | Type | Constraints | Description
activity_category_KEY | int | NOT NULL | AUTO-INCREMENT: Database assigned primary key for this table
update__staff_KEY | int | NOT NULL |
update_date | datetime | NOT NULL |
activity_category_id | nvarchar (11) | NOT NULL | User defined identifier (unique).
description | nvarchar (30) | NOT NULL | User Defined description
create_date | datetime | NOT NULL |
activity_category_id_sortable | varchar (48) | NOT NULL | A representation of the activity_category_id column that sorts in natural order, meaning that digits are sorted as numbers while non-digits are sorted alphabetically. A trigger keeps this field synchronized with the content of activity_category_id.
long_description | nvarchar (-1) | NOT NULL |

Primary key
Name | Columns | Description
PK_Activity_Category$activity_category_KEY | activity_category_KEY | CLUSTERED
Unique constraints
Name | Columns | Description
UK_Activity_Category__activity_category_id | activity_category_id | Each id must be unique.
UK_Activity_Category__activity_category_id_sortable | activity_category_id_sortable | An index by the sortable ID is desired, and the algorithm ends up producing unique values.

Incoming foreign keys
Name | Columns | Referencing table | Description
FK_Activity__Activity_Category__activity_category_KEY | activity_category_KEY | Activity |