I can't see "DATA" under "Design" as shown in the video of creating a login page 13:34

I am trying to create a login app. I was following the Demo(https://www.youtube.com/watch?v=KBPIR...) but in 13:34 I don't have the same menu as you guys. I can't see "data" on my version. I only see "Scope" and "binding". so I was wondering if that is only in the premium version. and if now how I can access it (Data just underneath Design) because it is stopping me from moving forward.
Thank you
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