Implementing the TM Forum Information Framework (SID)

Appendix A The Information Framework (SID) and Object-Oriented Databases

Chapter 5 Instantiation and Implementation Options

Chapter 4 Maintaining Information Framework (SID) Conformance

Chapter 3 The Information Framework (SID) and Database Design

When should the attributes (characteristics) be modeled explicitly versus using the pattern? • If characteristics are used, is there anything else that needs to be considered from a modeling perspective? • Are there any performance issues that should be considered?

Explicit Modeling Versus Characteristics

While composite attributes can be defined using this pattern, attributes don’t participate in complex associations, they can’t be sub-classed, and can’t have attributes that describe them.

Characteristics are Attributes, not Entities

Keep in mind that characteristics are attributes, not entities.