Logical Data Model (LDM)
(Redirected from logical schema)
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A Logical Data Model (LDM) is a data model that assumes some data modeling formalism (such as Relational Modeling or Object-Oriented Modeling).
- Context:
- It can be produced by a Logical Data Modeling Task.
- Example(s):
(a Relational Data Model).
(a Star Schema Data Model).- an Ontology Specification.
- …
- Counter-Example(s):
- See: Physical Database Schema, Semantic Model, Star Schema.
References
2019
- (Wikipedia, 2019) ⇒ https://en.wikipedia.org/wiki/Logical_data_model Retrieved:2019-2-28.
- A logical data model or logical schema is a data model of a specific problem domain expressed independently of a particular database management product or storage technology (physical data model) but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags. This is as opposed to a conceptual data model, which describes the semantics of an organization without reference to technology.
2008
- DAMA08
- QUOTE: An entity-relationship data model including data attributes that represents the inherent properties of the data independent of software, hardware or performance considerations.