POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
A logical dependency of a typical activity for a specific template. This enables the expected order of the typical activities contained in a template to be defined.
- ref_template_constraint_kind (M, K: ref_template_constraint_kind(activity_template_constraint)) (C138)
- The type of constraint. This defines how the constrained and constraining typical activities constrain each other. For example, the constrained must start after the end of the constraining. Each activity_template_constraint must be a kind of one ref_template_constraint_kind.
- activity_template (M, K: activity_template(activity_template_constraint))
- Gives the template that the template constraint is valid for. A template constraint is only valid for one template. Each activity_template_constraint must constrain activities of one activity_template.
- constrained_by (O, K: typical_activity(constraint_for))
- Indicates the typical activity that acts as the constraining activity of the template constraint. Each activity_template_constraint may defined as having a constraint one typical_activity.
- constraint_for (M, K: typical_activity(constrained_by))
- Indicates the typical activity that acts as the constrained activity of the template constraint. Each activity_template_constraint must have defined as constraining one typical_activity.
- activity_duration (O: ndt_day_interval)
- The duration of the constrained activity of the template constraint. This may act as an upper limit, a lower limit or both. The limit type is specified by the constraint kind.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- instance_create_date (O, I: ndt_date_tod) (C126)
- This is the date that this instance was created. This date is defined by the source if imported, or is the date the instance is created if a new instance. Inherited from e_and_p_data.
- instance_creator (O, I: ndt_identifier) (C126)
- This is the person, company or application that created this instance. This identifies the party responsible for loading this instance. Inherited from e_and_p_data.
- last_updated (O, I: ndt_date_tod) (C126)
- This is the date that this instance was last updated. This value should be updated when any part of this instance is altered (except for inverse relationships). Inherited from e_and_p_data.
- last_updated_by (O, I: ndt_identifier) (C126)
- This records the person or application making the update to this instance. Inherited from e_and_p_data.
- relative_time (O: ndt_day_interval)
- The time interval between the constrained activity and either the constraining activity or the absolute time for the template constraint. The role of the time interval is given by the constraint kind.
- source (O, I: ndt_identifier) (C126)
- The provider of this instance, which is usually a data provider for imported/purchased data. If this instance is provided by POSC, then this attribute must be "POSC". Inherited from e_and_p_data.
- data_collection (I, V: SET[0:?] data_collection_content(collection_part)) (C020)
- Indicates the data collections that include this instance of E and P data. Each activity_template_constraint may be a member of one or more data_collection_content. Inherited from e_and_p_data.
- document_information_content (I, V: SET[0:?] document_information_content(e_and_p_data)) (C136)
- These are the document specification parts that include this data value and define its meaning within a document specification. Each use may define a different meaning, and many uses are allowed. Each activity_template_constraint may be included in one or more document_information_content. Inherited from e_and_p_data.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each activity_template_constraint may be depicted by one or more graphical_element. Inherited from e_and_p_data.
Local rules:
- Uniqueness Constraint
- ref_template_constraint_kind, activity_template, constrained_by, constraint_for
Supertype path(s):
Referenced in Diagrams:
Generated on Tue Jul 10 15:39:03 2001
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