SQL - Schema (Metadata)

Data System Architecture

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A SQL schema is two things:

A SQL Schema is:

Scope / Level

Most providers have a limited number of levels; for example, most databases have either;

  • one level (“schemas”)
  • or two levels (“database” and catalog.





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SQLite is different from most of the database in that it stores the schema (metadata) in the sqlite_schema table as the original text of the CREATE statements that define the schema.



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