UML as a Data Modeling Notation, Part 4 by David C. Hay, Michael J. Lynott
This article, Part 4 of what was originally a 3-part series, is in response to some issues that were brought up after the first three articles of this series were published.

UML as a Data Modeling Notation, Part 3 by David C. Hay, Michael J. Lynott
Aesthetics
This article, Part 3 of a three-part series, discusses the aesthetics of preparing and presenting data models – no matter what notation is used.

UML as a Data Modeling Notation, Part 2 by David C. Hay, Michael J. Lynott
The Details
This article, Part 2 of a three-part series, addresses sub-types, domains and unique identifiers, as well as what in UML should not be used in a data model.

UML as a Data Modeling Notation, Part 1 by David C. Hay, Michael J. Lynott
Two Modeling Worlds
Part 1 of this three-part series describes the basic differences between notations and how they can be reconciled.