| Dimensional Warehouse Model Data Model |
| Description | One of a set of ordered partitions of a subject's, study subject's or experimental unit's participation in a study. An Epoch represents a state within a study such that subjects in separate arms within that state are comparable. Each epoch serves a purpose in the study as a whole, typically exposing the subject to a treatment or preparing them for a treatment, or gathering post-treatment data. Activities and activity results control the subject's movement from one epoch to another. For example: A study designed to assess the effects of treatments might have 3 epochs as follows: A Screening Epoch in which subjects' eligibility is determined and baseline measurements are made. A Treatment Epoch during which treatments are given and effects of treatment are assessed. A Follow-up Epoch during which post-treatment assessments are conducted. |
| Primary Key | |
 Epoch Dimension PK |
|
| Dependencies | |
 |
|
| |
|
| |
|
| Reverse Dependencies | |
 |
|
| 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 |
Epoch 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 |
Epoch Descr
| Description | The textual representation of the epoch. For Example: "A 2-week period during which eligibility is determined and baseline measurements are taken". "The first treatment epoch is a one-week period during which a single dose of one of the three investigational treatments is administered". |
| Data Type | Standards - Data Domains.ddm/Data Domains/Text Large [VARCHAR(1024)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Epoch 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 |
Epoch Nm
| Description | A non-unique textual identifier for the epoch. For Example: first treatment epoch, second treatment epoch, first wash-out epoch, second wash-out epoch When multiple Epochs have the same purpose (e.g., treatment), then the titles will probably include order numbers to distinguish them. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Text Large [VARCHAR(1024)] |
| Is Part Of PrimaryKey | false |
| Is Required | false |
| Is Derived | false |
| Is Surrogate Key | false |
Epoch 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 |
Priority Sequence
| Description | An integer specifying the relative sequential or temporal ordering of this epoch among other similar epochs in a study. For Example: In a Study that has Screening, Treatment and Follow-Up epochs, the sequence number indicates which Epoch precedes the other. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Quantity Integer [INTEGER] |
| 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 |
Target Accrual Range Qty
| Description | An integer falling within minimum and maximum bounds that specifies how many study subjects to be accrued for the epoch. |
| Data Type | Standards - Data Domains.ddm/Data Domains/Quantity Integer [INTEGER] |
| 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 |
Type Cd
| Description | The code that corresponds to the Type 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 |
Type Code Descr
| Description | The description that corresponds to the 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 |
Type Code Sk
| Description | The code identifying the actual type of the entity as per the type hierarchy defined in the analysis data model. |
| 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 |
Epoch Dimension PK
| Key Attribute | Epoch Dk |
| Dimensional Warehouse Model Data Model |