Differences between infrastructure dba and production dba

Hi DBAs,
I have graduated and interested in heading into dba path.
I heard there's 2 kind of dba, infrastrucrue dba and production dba. can anyone advise what's the differences as i'm new to working society?
heard that the infrastructure dbas are actually task to setup the database infrastructure in r&d environment and tested it before deploying it to production site through raising instructions for production dba to do it. Most of the their time is commited to co-ordinate project between the application team and production team.
please advise.
thanks

Infrastructure is the same as a development DBA sort of.....
But Infrastructure sort of Architects the system too. Think of a RAC system. He might recommend the RAC, design the interconnects, decide what storage and HBA's to use. You get the idea.
Production is the one who gets pages when the system goes down. They generally maintain the system day to day and apply patches, setup backups etc...

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Differences between infrastructure dba and production dba

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