System Design Documentation - IB Computer Science

Visual representation of entities and their relationships in a database

Used to design and understand relational databases

Includes entities, attributes, relationships and cardinality symbols

Visual representation of how data flows through a system

Used to model “as-is” and “to-be” systems

Includes external entities, processes, data stores, data flows and data transformations

Visual representation of how processes, equipment, instruments and controls work together to produce a product

Used to understand and optimize processes

Includes process and equipment symbols, instrumentation and controls

Visual representation of a process

Used to understand, evaluate and improve processes

Includes process steps, decisions, inputs and outputs

Visual representation of actors, use cases and their relationships in a system

Used to understand and validate user requirements

Includes actors, use cases, associations and multiplicity

Visual representation of a user interface

Used to communicate and validate design ideas with stakeholders

Includes screen layouts, buttons, text, images and other elements

Other commonly used visual modeling tools include: State diagrams, Activity diagrams, Sequence diagrams, Class diagrams, Object diagrams

Used in different domains and contexts to represent various aspects of a system

Teacher Presentation