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So now let's do a short lecture

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on RDS Custom.

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So, we know that with RDS we don't have access

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to any underlying operating system, or customization,

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but with RDS Custom we actually do.

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And RDS Custom is for two database types,

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it's for Oracle and Microsoft SQL Server.

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In which, thanks to RDS Custom, we have access to the OS,

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and database customization.

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So with RDS, we still get all the benefits

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of automated setup, operations,

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and scaling of the database in AWS.

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But with the RDS Custom option,

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the custom part of RDS Custom,

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we actually have access to the underlying database

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and operating system.

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So we can actually configure internal settings,

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install patches, enable native features,

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and we can actually access the underlying EC2 instance

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behind RDS, using SSH or SSM Session Manager.

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So here is my EC2 instance, and as a user,

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we can now, if it's using Amazon RDS Custom,

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apply customizations and SSH into it.

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To perform any customization it is recommended

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to deactivate the automation mode,

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so that RDS does not perform any automation,

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or maintenance, or scaling, or whatever you want,

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while you perform your customization.

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And also because you may actually break things,

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because now you have access to the underlying EC2 instance,

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it is much better to take a database snapshot,

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otherwise you will not be able to recover from your actions.

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So to summarize, RDS versus RDS Custom.

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RDS will manage your entire database,

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and your operating system.

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Everything is managed by AWS, you don't have to do anything,

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and RDS Custom, it's for Oracle

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and Microsoft SQL Server only,

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and you have actually full admin access

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to the underlying operating system and the database.

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So that's it for this lecture, I hope you liked it,

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and I will see you in the next lecture.