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Dec 12, 2018 at 14:35 history edited John K. N. CC BY-SA 4.0
added addition of CDB and PDB to the database comparison as suggested by a_horse_with_no_name;
Dec 12, 2018 at 13:44 comment added John K. N. If I look at Oracle Database Architecture and 13 Oracle Database Instance then pluggable databases aren't mentioned in the general context of the concepts of Oracle databases and instances. Only in the context of multitennant architecture are CDB (container database) are PDB (pluggable databases) mentioned. I will add a reference. I stand corrected again.
Dec 12, 2018 at 13:28 comment added user1822 "An Oracle Instance will contain one database" is no longer true since Oracle 12. One instance can contain multiple pluggable databases
Dec 12, 2018 at 13:16 history edited John K. N. CC BY-SA 4.0
modified question after being corrected by Dan Guzman;
Dec 12, 2018 at 13:10 comment added John K. N. I stand corrected. Thanks for pointing that out. It wasn't scripted out when I was previously checking the SQL Server schema. I re-read the documentation and can verify that your statement is absolute correct. I'll amend that to my answer.
Dec 12, 2018 at 13:04 comment added Dan Guzman SQL Server schemas are also linked to users. If an AUTHORIZATION clause is omitted, the authorization (owner) defaults to the user creating the schema. SELECT name, USER_NAME(principal_id) AS schema_owner FROM sys.schemas;
Dec 12, 2018 at 9:11 history answered John K. N. CC BY-SA 4.0