Systems Engineering Fundamentals > Designing with Systems Engineering
Objects you work with
Note: The Systems Engineering and Mechatronics Process Management data models share many objects.
Absolute occurrence
A relationship between a parent and an item one or more levels lower down the structure. The parent is the context in which the absolute occurrence exists.
Baseline
A collection of items and the relationships between them that is established to ensure their continued existence. It enables their configuration to be reconstructed and audited. Baselines are often created to preserve the state of a requirements structure or product at a particular checkpoint.
Budget
The actual budgetary values for a specific element in the design, for example, weight, power consumption, or cost.
Budget definition
Budget definitions are attached to design structures to maintain budget information such as the cost of an assembly, the weight of an assembly, or its power consumption.
Connection
A pathway between two interfaces. A connection allows a payload to pass from the output interface that generates it to one or more input interfaces that consume it.
Decomposition
The definition of a system or product in terms of functional, logical or physical components. Sometimes called a breakdown.
Diagram
A graphical view into a functional design represented in the Teamcenter data model.
Function
The objects or building blocks of a functional design. Functions in a functional design are equivalent to the parts in a physical design.
Functional model
A structured representation of the functions, behaviors, activities, or processes of the system or product.
Interface
The points on functions where inputs are consumed or outputs are generated. Sometimes called ports.
Item
A workspace object generally used to represent a product, part, or component. Items can contain other workspace objects including other items and object folders.
Item revision
A workspace object generally used to manage revisions to items.
Logical model
A structured representation of electrical signals, logical interfaces, and connections in the system or product.
Occurrence
A hierarchical structure relationship between an immediate parent and its child item or item revision in a precise structure. Sometimes called a relative occurrence.
Physical model
A structured representation of the tangible subassemblies and components of the as-built product.
Snapshot
A folder that contains a revision of a configured structure. A snapshot can be used to redisplay the as-saved structure.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.plm00192/id1250177 · retrieved 2026-07-10