IM UNIT 5- Understanding Data model and Schema
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pt 1
Last updated 8:57 AM on 8/23/25
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4 Terms
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Data Model
High-level description of how data is structured and related (e.g., relational model). Hides low-level storage details.
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Schema
Actual description of data using a data model (e.g., relation name, fields/attributes, types).
3
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Types of Data Models:
Semantic Data Model
More abstract; focuses on the meaning of data (e.g., “An Artist RECORDS an Album”).
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Types of Data Models:
Relational Model
Organizes data into tables (relations) with attributes (columns) and tuples (rows).
Note 
Flashcards (33)