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Add 'genres'

Anna Schumaker 2023-03-22 15:03:37 -04:00
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The `genres` table holds information for genre playlists.
### Columns
| Name | Type | Description |
| --------------------------------- | ------- | ------------------------------------ |
| genreid | INTEGER | The unique id of a singe genre |
| [propertyid](playlist_properties) | INTEGER | The rowid of this genre's properties |
| name | TEXT | The name of this genre |
### Triggers
| Name | When | Description |
| --------------------- | ------------ | -------------------------------------------------------------- |
| genres_insert_trigger | After insert | Create a new row in the [[playlist_properties]] table |
| genres_delete_trigger | After delete | Delete this genre's entry in the [[playlist_properties]] table |
### The `genres_view`
The `genres_view` joins the `genres` table with the [[playlist_properties]] table so the application can use one query to access all the relevant state for each genre.
| Column | Description |
| --------------------------------- | ------------------------------------------------------- |
| genreid | The genreid of this genre |
| [propertyid](playlist_properties) | The rowid of the [[playlist_properties]] for this genre |
| name | The name of this genre |
| [active](playlist_properties) | The active state of this genre |