In data modelling practice, entities are linked by:
Answer(s): E
Data Models are critical to effective management of data, because they:
The goal of data modelling, documenting different perspectives and aligning them in a single data model, achieves:
Significant operational issues have been caused by the implementation of a data model that represents a Customer Agreement as a ternary relationship between the Enterprise, a Customer, and their Contact Person. Which of the following describes the likely operational issue?
Answer(s): C
A project scope includes the collection, exchange and reporting of data from multiple systems. Conceptual, logical and physical data models are maintained. How many models of each type can be expected?
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