A detailed comparison of how schemas work in PostgreSQL versus Oracle, covering key differences in user-schema relationships, namespace rules, object ownership, privileges, schema search paths, and system schemas. In Oracle, users and schemas have a strict one-to-one correspondence, while PostgreSQL treats them as orthogonal

Table of contents
The common ground: what is a schemaUsers and schemasSchemas as namespacesSchemas and object ownershipSchemas and privilegesThe “default schema” for unqualified accessSystem schemasConclusionSort: