Catalog vs Schema

What’s the difference between a catalog and a schema in a relational database?

  • A computer may have one cluster or multiple.
  • A database server is a cluster.
  • A cluster has catalogs. ( Catalog = Database )
  • Catalogs have schemas. (Schema = namespace of tables, and security boundary)
  • Schemas have tables.
  • Tables have rows.
  • Rows have values, defined by columns.
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