The Data Model Resource Book, Volume 3: Universal Patterns for Data Modeling

Silverston c07.tex V2 - 11/20/2008 5:44pm Page 350

350 Chapter 7 ■ Contact Mechanisms: How to Get in Touch

TELECOMMUNICATIONS NUMBER has attributes of country telephone

code, area code,andphone number.

NOTE

For more detail on the Level 3 Classification Pattern see Chapter 5. This

section also highlights how you can integrate different patterns from the different

sections in the book to create a comprehensive solution. The Level 3 Classification

Pattern can be considered a component that we attached to the Level 3 Contact

Mechanism Pattern to provide a flexible solution for classifying contact

mechanisms.

Much like you saw in Figure 7-3, you can s ee that ‘‘each of the ENTITY

CONTACT MECHANISM(s) may be used for the purpose of one or more

CONTACT MECHANISM PURPOSE(s) and each CONTACT MECHANISM

PURPOSE must be classified by one or more CONTACT MECHANISM

PURPOSE TYPE(s).’’ In other words, you may say that an organization with a

telecommunications number of ‘‘353 1 8555 209’’ may use that contact mech-

anism for the purpose of ‘‘Order confirmation’’ and ‘‘Payment follow up,’’

and the same organization may have a postal address ‘‘323 Howth Road...,’’

which could be used for the purposes of ‘‘Ship to’’ and ‘‘Bill to.’’

Each ENTITY 1 CONTACT MECHANISM may be used for one or more

CONTACT MECHANISM USAGE(s), each of which must be classified by a

CONTACT MECHANISM USAGE TYPE.’’ In the previous section you saw

that ...