TColumnProps Set
A set of TColumnProp flags that controls the behaviour of a mapped database column during persistence operations.
Syntax
Unit: Aurelius.Mapping.Metadata
Members
| Name | Value | Description |
|---|---|---|
| Unique | 0 | Adds a unique constraint on the column in the database, preventing duplicate values. |
| Required | 1 | Marks the column as NOT NULL in the database, requiring a value to be provided. |
| NoInsert | 2 | Excludes the column from INSERT statements; the column value is not written when an entity is first saved. |
| NoUpdate | 3 | Excludes the column from UPDATE statements; the column value is not written when an existing entity is updated. |
| Lazy | 4 | Enables lazy loading for the column. Use for blob or memo fields that should only be loaded from the database on first access. |