Name | Meta_Index |
---|---|
Entity Type | External |
Description | Index, Primary Keys, and potentially Natural Keys are described using the Meta_Index table. |
Submodel | Meta |
Entity Scope | Meta |
Primary Key | Entity , Index_Nr |
Natural Key | Entity , Index_Nr |
Generalizations | |
Specializations |
Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
---|---|---|---|---|---|
Auto |
|
Was this index automatically generated by the meta-system? 1 => TRUE and 0 => FALSE. Automatically populated by the meta-system. | No |
NUMBER(1) | |
Bitmap |
|
Is this a Bitmap index? 1 => TRUE and 0 => FALSE. | No |
NUMBER(1) | |
Entity | Meta_Entity |
|
Foreign Key to Meta_Entity | Yes |
VARCHAR2(25) |
Index_Nr |
|
Used to distinguish indices within entity. Non-Primary indicies begin with one for each entity. Primary keys are identified by zero. | Yes |
NUMBER(2) | |
Natural_Key |
|
Is the index for a Natural Key? 1 => TRUE and 0 => FALSE. | No |
NUMBER(1) | |
Primary_Key |
|
Is the index for a Primary Key? 1 => TRUE and 0 => FALSE. | No |
NUMBER(1) | |
Suppress |
|
Should this index be suppressed? 1 => TRUE and 0 => FALSE. It is intended to inhibit index creation when it is the leading edge of another index. Automatically populated by the meta-system. Not currently exploited. | No |
NUMBER(1) | |
Unique_Key |
|
Is the Index unique? 1 => TRUE and 0 => FALSE. | No |
NUMBER(1) |
Link | To Entity | Description | Implementation Technique | Required |
---|---|---|---|---|
Entity | Meta_Entity | Foreign Key to Meta_Entity | Restrict | Yes |