NSV-11a Logical data Model
The purpose of data models is to enable the analysis, design and implementation of the data presentation, handling and storage functionality of an information system. A data model is the representation of an information model in a form that is specific to a particular paradigm or theory on the representation, storage and handling of data, often reflecting a certain type of data store or repository technology. Data models are often distinguished as logical or physical data models.
The Logical Data Model is a generalized formal structure in computer science. As such it directly reflects the paradigm or theory oriented mapping from the information model to the data model.
The Logical Data Model enables the analysis of a system's data definition aspect, without any consideration of implementation specific or product specific issues. It is also used to provide a common dictionary of data definitions to consistently express subviews wherever logical-level data elements are included in the descriptions.
The NSV-11a Report Template
The NSV-11a report template uses two parameters:
• The Architecture parameter, which indicates the architecture to be analyzed.
• The Data Model Subset parameter, which is optional. This parameter is used to reduce the scope of the study to a subset of the data models defined in the architecture. If this parameter is not set, all the data models defined in the architecture are taken into account.
The NSV-11a Logical Data Model Chapter
The NSV-11a logical data model chapter lists the operational data models of the architecture. Each data model is listed with its entities and attributes and the associations between the entities.
The NSV-11a Logical Data Model Hierarchy Chapter
The Logical Data Model Hierarchy chapter provides the hierarchy structure of the logical data models of the architecture.