| Dimensional Warehouse Model Data Model |
| Description | A physical entity that is the primary unit of interest in a specific research objective. For example: If all pigs in a pen receive the same intervention in their feed, and the primary observations and analyses of interest are associated with the entire pen (for example, total feed consumed, total weight of all pigs combined), then the pen of pigs rather than the individual animal is the experimental unit. [example from the CDISC/HL7 Study Participation message] A human may have 10 patches of skin each considered an experimental unit. A product may have 10 bearings in it, each considered an experimental unit. Alternatively, the whole human or product may be an experimental unit. Depending on the research objectives, a single study may have multiple levels of experimental units, such as whole people and patches of skin. In an interventional study, the experimental unit is assigned to an intervention. The experimental unit is also the unit of primary statistical analysis. Commonly the individual study subject (animal, person or product) is the experimental unit. Different experimental units must be capable of receiving different experimental interventions. |
| Primary Key | |
 Experimental Unit Dimension PK |
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| Attribute Details |
AWM Load Info Sk
| Description | The surrogate key of the load information entry describing the details regarding the loading of the row in the atomic data warehouse. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key Large [LONG] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Current Ind
| Description | Set to 'Y' if this is the most recent row of a group having the same Surrogate Key. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Boolean Indicator [INTEGER] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
DWM Load Info Sk
| Description | The surrogate key of the load information entry describing the details regarding the loading of the row. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key Large [LONG] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Effective From Dt
| Description | Establishes a period where a set of attributes are true according to the business. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Date [DATE] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Effective To Dt
| Description | Ends a period of effectivity. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Date [DATE] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Experimental Unit Bk
| Description | Concatenated values of a set of business attributes that uniquely identify the row. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Business Key [VARCHAR(255)] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Experimental Unit Dk
| Description | A numeric surrogate key used to uniquely identify entities in the dimensional model. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key Large [LONG] |
| Is Part Of PrimaryKey | true |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | true |
Experimental Unit Sk
| Description | A numeric surrogate key used to uniquely identify entities in the atomic model. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key Large [LONG] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Identification Num
| Description | A unique symbol that establishes identity of the experimental unit. For example: Patient number 7 on a study |
| Data Type | Standards - Data Domains.ddm/Data Domains/Alphanumeric [VARCHAR(80)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Source Cd
| Description | The code that corresponds to the Source Code Sk. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Tenant Common Code [VARCHAR(80)] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Source Code Descr
| Description | The description that corresponds to the Source Type Cd. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Description [VARCHAR(250)] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Source Code Sk
| Description | The origin of the data identifying the actual load source, vendor, manual key entry, or context of the data in a specific row in the database. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key [INTEGER] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Status Cd
| Description | Identifies the phase in the lifecycle of the experimental unit. For example: Active Cancelled Pending Suspended Terminated Nullified |
| Data Type | Standards - Data Domains.ddm/Data Domains/Tenant Common Code [VARCHAR(80)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Status Code Sk
| Description | Identifies the phase in the lifecycle of the experimental unit. For example: Active Cancelled Pending Suspended Terminated Nullified |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key [INTEGER] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Status Descr
| Description | Identifies the phase in the lifecycle of the experimental unit. For example: Active Cancelled Pending Suspended Terminated Nullified |
| Data Type | Standards - Data Domains.ddm/Data Domains/Description [VARCHAR(250)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Status Dt
| Description | The date and time the status for an experimental unit as part of a study or clinical trial is defined. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Date Time [TIMESTAMP] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Subgroup Cd
| Description | Specifies the identification of uniform groups of experimental units for separate analysis or treatment. For example: Clinical Data Update System (CDUS) Reporting (for the National Cancer Institute (NCI) |
| Data Type | Standards - Data Domains.ddm/Data Domains/Tenant Common Code [VARCHAR(80)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Subgroup Code Sk
| Description | Specifies the identification of uniform groups of experimental units for separate analysis or treatment. For example: Clinical Data Update System (CDUS) Reporting (for the National Cancer Institute (NCI) |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key [INTEGER] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Subgroup Descr
| Description | Specifies the identification of uniform groups of experimental units for separate analysis or treatment. For example: Clinical Data Update System (CDUS) Reporting (for the National Cancer Institute (NCI) |
| Data Type | Standards - Data Domains.ddm/Data Domains/Description [VARCHAR(250)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Tenant Sk
| Description | The surrogate key of the entry identifying the legal owner of the data. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Surrogate Key [INTEGER] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Valid From Ts
| Description | Establishes a period where a set of attributes are true in the source system. This would be populated with the transaction timestamp and would be used for the snapshot date. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Timestamp [TIMESTAMP] |
| Is Part Of PrimaryKey | false |
| Is Required | true |
| Is Derived | false |
| Is Surrogate Key | false |
Valid To Ts
| Description | Ends a period of validity. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Timestamp [TIMESTAMP] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
| Primary Key Details |
Experimental Unit Dimension PK
| Key Attribute | Experimental Unit Dk |
| Dimensional Warehouse Model Data Model |