Database: Difference between revisions

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1970s relational DBMS: Use SVG version instead of PNG image to illustrate the relational key concept.
External, conceptual, and internal views: Use SVG vector imaging instead of PNG bitmap to demonstrate the external/internal schema.
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===External, conceptual, and internal views===
 
[[Image:A2 2 Traditional View of Data SVG.jpgsvg|thumb|320px|Traditional view of data<ref name="ITL93">itl.nist.gov (1993) [http://www.itl.nist.gov/fipspubs/idef1x.doc ''Integration Definition for Information Modeling (IDEFIX)'']. 21 December 1993.</ref>]]
 
A database management system provides three views of the database data: