SOFTWARE TESTING
TESTING PRINCIPLES AND CONCEPTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Th technical map of rules and data structures of the system is usually depicted in which type of Data Model? (Unit 15)
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Conceptual
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Logical
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Physical
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ERD
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Explanation:
Detailed explanation-1: -A data model is a logical representation of the structure of the data. A data model does not depict the relationships among the data. A data model should be transformed into a database design only after the users have approved and validated it.
Detailed explanation-2: -The three primary data model types are relational, dimensional, and entity-relationship (E-R). There are also several others that are not in general use, including hierarchical, network, object-oriented, and multi-value.
Detailed explanation-3: -A logical data model (LDM) is a type of data model that describes data elements in detail and is used to develop visual understandings of data entities, attributes, keys, and relationships.
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