Information Structure
| Item | Comment | 
|---|---|
| Database Column | The name of the column in the SQL table. | 
| Type | The data type of the contents of the database column. | 
| Size | For types that have a maximum capacity, the upper limit is provided in parentheses. | 
| Key | The word “Key” appears when a column is a unique key field within the table. It is possible for several database columns to be part of the key, so that this indicator may appear for several columns in a table. | 
| Generated ID | This indicates that a numeric ID is assigned by the database. | 
| Nullable | If this indicator is present, the database column permits nulls. | 
| Computed | This indicator appears for columns that are automatically computed by the database. | 
| Default | If a column has a default value declared in the schema, this is specified at the end of the first set of details for the column. | 
| Details | Describes the data stored in the database column, including many of the indicators described above. |