DSDs are a simple Heirarchy diagram , most useful for documenting complex data entities. They differ from ERDs in that ERDs focus on the relationships between different entities wheras DSDs focus on the relationships of the elements within an entity.

Contents

1 Examples 2 Types of DSDs 3 Links 4 Tools for making DSDs 5 References

Examples

Types of DSDs

• Hierarchy diagram

Links

• diagram
• ERD
• Hierarchy diagram

Tools for making DSDs

References

• DeMarco' "Structured Analysis and System Specification"
• Yourdon's "Modern Structured Analysys"