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https://stackoverflow.com/questions/8299733/single-login-for-multiple-apex-application-with-in-same-workspace
http://www.grassroots-oracle.com/2014/04/shared-authentication-across-multiple-apex-apps.html
https://joelkallman.blogspot.com/2016/07/apex-session-isolation-across-multiple.html
https://www.packtpub.com/mapt/book/application_development/9781849684002/1/ch01lvl1sec16/structure-of-multiple-applications
https://insum.ca/how-to-oracle-apex-workspaces/
https://community.oracle.com/thread/318976?start=15&tstart=0
https://docs.oracle.com/database/apex-18.2/AEADM/managing-users-in-a-workspace.htm
https://www.abakus.si/download/events/2018_aljaz_mali_apex_internal_workspace.pdf
http://eriksekeris.blogspot.com/2010/06/apex-using-multiple-database-schemas.html
https://oracle-web.com/workspace/
https://slideplayer.com/slide/7452499/
https://help.salesforce.com/apex/HTViewHelpDoc?id=networks_customize_login_page.htm
http://valeryneuman.com/wp-content/plugins/snapshot/assets/css/jutorje32/ncos5675pis.php?sgrhjuyter=apex-login-oracle