As a DBA you might be aware that since SQL Server 2005 database maintenace plans have given flexibility in deploying the workflow of tasks required to make sure that your database is optimized, is regularly backed up, and is free of inconsistencies in addition to the avoiding the fragmentation on indexes...
I have been asked about Database Administrator roles and responsibilities many times and also seen in forums/newsgroups. In a nutshell DBA is responsible for all sorts of database within the organisation. This might vary for the management of Enterprise network systems where you will find batch of junior...