| Name | Measurement_Tag_Threshold |
|---|---|
| Entity Type | Table |
| Description | The various thresholds that can be defined for a measurement tag. This is primarily done for surveillance purposes. The actual values of the tag will be compared to these thresholds, and an appropriate alarm can be raised if the actual values are outside of these thresholds. Example values are: High PI Limit, Low PI Limit, etc. This can also define the expected curve for a tag. |
| Submodel | Facility |
| Entity Scope | Project |
| Primary Key | Id |
| Natural Key | Measurement_Tag_Id , Threshold_Type , Start_Date , Existence_Kind , Version |
| Generalizations | Entity , IT_Object , Tracked_Object |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| End_Date | DATE | NA |
End date and time of the validity of this threshold. | No |
DATE |
| Existence_Kind | REF_EXISTENCE_KIND | NA |
A reference value that describes the state of existence in the lifecycle of the entity, for example, Planned, Predicted, Required, Simulated, and Actual. | Yes Actual |
VARCHAR2(64) |
| Expected_Curve_Id | Bulk_Array |
|
The identifier of the bulk array that will store the expected curve. The actual values of the measurement tag can be compared to this curve for surveillance purposes. | No |
NUMBER(38) |
| GUID | STRING128 | NA |
Globally Unique IDentifier for an instance of a class. USAGE NOTES: There are two cases: 1) GUID is not populated or used; and 2) it is populated with a value that is globally unique. If the GUID is populated there are two means of doing so for a given project: 2a) Seabed automatically generates and populates the GUID when an instance is created (valid only on Oracle based systems); and 2b) the GUID is generated and populated by an application (other than Seabed) on instance creation. Whether Seabed automatically generates GUIDs for a project is determined by the Auto_GUID flag in SDS_Account. Note that techniques 2a and 2b can coexist in the same project. When GUIDs are automatically generated an application can override the automatically generated GUID with its own GUID by simply supplying the GUID value. Applications that generate their own GUIDs and populate the GUID column will function correctly on projects which have automatic GUID generation turned on. | No |
VARCHAR2(128) |
| Id | ID | No_Unit |
Unique identifier for this entity. | Yes |
NUMBER(38) |
| Insert_Date | DATE | NA |
Date the entity was created in the repository | No |
DATE |
| Insert_User | STRING64 | NA |
The name of the user responsible for the creation of this entity in the repository. | No |
VARCHAR2(64) |
| Measurement_Tag_Id | Measurement_Tag |
|
The identifier of the measurement tag to which the threshold applies. | Yes |
NUMBER(38) |
| Measurement_Tag_Tbl | Meta_Entity |
|
Measurement_Tag type | Yes |
VARCHAR2(30) |
| Name | ENTITY_NAME | NA |
The name given to any object or data item, e.g. name of Well, name of Field, etc. | No |
VARCHAR2(255) |
| Original_Source | STRING64 | NA |
The name of the person, Organization or project source that originally provided this entity, e.g. "IHS-EnergyData" or "FinderUpper Stratton Deeper Pool 15" | No |
VARCHAR2(64) |
| Produced_By | STRING64 | NA |
The name of application role that created the entity, for data created programmatically. | No |
VARCHAR2(64) |
| Remarks | STRING2000 | NA |
Any type of remarks added to an entity instance. | No |
VARCHAR2(2000) |
| SDAT_Label | int | No_Unit |
Label used by the security system for entitlements. SDAT is Secure Data Access Technology. | No |
NUMBER(10) |
| Source | STRING64 | NA |
Name of the person or organization responsible for this entitys E and P content and quality. Not the data technologist or IT expert creating the entity, for which see IT_Object.Insert_User and Update_User. | No |
VARCHAR2(64) |
| Start_Date | DATE | NA |
Start date and time of the validity of this threshold. | Yes |
DATE |
| Threshold_Tag_Id | Measurement_Tag |
|
The tag whose value provides the threshold value for the original tag. | No |
NUMBER(38) |
| Threshold_Tag_Tbl | Meta_Entity |
|
Measurement_Tag type | No |
VARCHAR2(30) |
| Threshold_Type | R_Measurement_Tag_Limit |
|
The type of measurement tag threshold. | Yes |
VARCHAR2(64) |
| Threshold_Value | double | No_Unit |
The numeric value of the measurement tag threshold. The value is assumed to be in the same unit as the Measurement_Tag_Uom in Measurement_Tag unless the threshold type specifies that it is a percentage value or fraction. | No |
NUMBER |
| Update_Date | DATE | NA |
Date of the most-recent modification to the entity. | No |
DATE |
| Update_User | STRING64 | NA |
The name of the user responsible for the last modification to this entity. | No |
VARCHAR2(64) |
| Version | STRING255 | NA |
The form or variant of the entity. | Yes 1 |
VARCHAR2(255) |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Threshold_Type | R_Measurement_Tag_Limit | The type of measurement tag threshold. | Restrict | Yes |
| Measurement_Tag | Measurement_Tag | The identifier of the measurement tag to which the threshold applies. | Cascade | Yes |
| Expected_Curve | Bulk_Array | The identifier of the bulk array that will store the expected curve. The actual values of the measurement tag can be compared to this curve for surveillance purposes. | Control | No |
| Threshold_Tag | Measurement_Tag | The tag whose value provides the threshold value for the original tag. | Cascade | No |