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Each Workspace has a Logical Data Model (LDM) which defines what data is available for analysis in that workspace and what the relationships between different data entities (datasets) are.
1 Μαρ 2023 · 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.
7 Μαρ 2023 · A logical data model is a data model that provides a detailed, structured description of data elements and the connections between them. It includes all entities — a specific object transferred from the real world (relevant to business) — and the relationships among them.
Logical Data Models (LDM for short) are made up of entities—which are the objects or concepts for which you want to track relevant data—and relationships between these entities. For example, a retail business might want to track data about customers and their sales orders.
18 Μαΐ 2024 · A logical data model provides a high-level abstraction of data, focusing on crucial elements that represent various business concepts and rules. This abstraction serves to simplify complex data structures into manageable components, emphasizing the relationships between entities and attributes.
In this unit, you’ll apply the concepts learned so far to evaluate a statistical table and the Conceptual Data Model and extend the model to create a Logical Data Model with fully defined variables and value sets.
