Effective From DtEffective To DtEpoch DescrEpoch NmEpoch SkLoad Info SkPriority SequenceSource Code SkTarget Accrual Range QtyTenant SkType Code SkValid From TsValid To Ts
| Atomic 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. |
| Attributes | |
| Effective From Dt |
|
| Effective To Dt |
|
| Epoch Descr |
|
| Epoch Nm |
|
| Epoch Sk |
|
| Load Info Sk |
|
| Priority Sequence |
|
| Source Code Sk |
|
| Target Accrual Range Qty |
|
| Tenant Sk |
|
| Type Code Sk |
|
| Valid From Ts |
|
| Valid To Ts |
|
| Relationship | |
 Epoch Detail_Epoch_FK |
|
| Primary Key | |
 Epoch Detail PK |
|
| Dependencies | |
 |
|
| Reverse Dependencies | |
 |
|
| Attribute Details |
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 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 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 |
| 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 | Surrogate key for the anchor entity. |
| 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 | false |
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 |
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 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 Code Sk
| Description | Identifies the actual type of the entry based on the entity type hierarchy defined in the business 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 | true |
| 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 |
| Relationship Details |
Epoch Detail_Epoch_FK
| Is Identifying Relationship | true |
| Child Table | Epoch Detail |
| Child Multiplicity | ZERO_TO_MANY |
| Child Referential Integrity: On Delete | NONE |
| Child Referential Integrity: On Insert | NONE |
| Child Referential Integrity: On Update | NONE |
| Parent Table | Epoch |
| Parent Multiplicity | ONE |
| Parent Referential Integrity: On Delete | NONE |
| Parent Referential Integrity: On Insert | NONE |
| Parent Referential Integrity: On Update | NONE |
| Primary Key Details |
Epoch Detail PK
| Key Attribute | Epoch Sk |
| Key Attribute | Valid From Ts |
| Atomic Warehouse Model Data Model |