A real-time database is a database in which both the data and the operations upon the data may have timing constraints. The design of this kind of database must consider both temporal aspects of data and timing constraint of transactions. This paper proposes a new UML profile that extends UML with concepts related to real-time databases design. These extensions aim to accomplish the conceptual modeling of a real-time database. Our propositions is based on the HLAM (High Level Application Modeling) and NFPs (Non-Functional Properties) packages of MARTE (Modeling and Analysis of Real-Time and Embedded systems), which provides capabilities of modeling concepts to deal with real-time and embedded system features, in order to benefit from some concepts that we consider suited for real-time databases design. The proposed profile is illustrated by a case study in the context of Intelligent Transport System.
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