Log into SAP Cloud Platform by opening the following URL in a new tab: https://account.hanatrial.ondemand.com
Make sure you are using the Europe (Trial) landscape, and click on your account name to open the cockpit view.
In the left-hand navigation bar, select in Persistence > Databases & Schemas and check that you have database of the system type HANA MDC (trial) created.
If you have one instance already configured, then please go to the next step of this tutorial.

If you do not have HANA MDC instance, then follow these steps to create the instance and assign required roles to SYSTEM
user.
Click on New.

Choose the HANA MDC (trial) as the Database System.
Pick a Database ID for your instance (it should be all lowercase, only letters and digits).
Choose a password for the SYSTEM
user.
Please note it down, as you are the only one who is going to use it, and there is no way to reset it if lost.
Click on Save

Now your SAP HANA MDC instance is being built, and this will take about 6 minutes.
You should see a message Database started successfully on the Events screen once the instance is ready to be used.

Now, two more steps need to be done to give your SYSTEM
user administration and developer roles.
It is not a good practice to update the SYSTEM user like this but for the sake of time and reduce the number of steps, we will be updating the SYSTEM user.
So please, never give the same user administration and developer roles in real-life productive scenarios! ;-)
On the left side navigation bar, click on Overview.
Click on Administration Tools: SAP HANA Cockpit.

Logon as user SYSTEM
with the password you provided during the instance creation.

At the first time login as SYSTEM
, an information screen pops up saying your user has no administration authorizations yet.
Just click OK on this and Continue on the next pop up.

Once the SAP HANA Cockpit is open, click on Manage Roles and Users to open the Security Workbench.

SAP HANA Web-based Development Workbench: Security opens in the new browser window.
Expand the Users node, click once on the SYSTEM user, and click green plus icon to add a new Granted Roles to the user.

Search for role sap.hana.xs.ide.roles::Developer
, select it and click OK to add that role to Granted Roles.

Press Ctrl+S
or click Save icon.
Now your SYSTEM
user has developer role assigned. Again, never do the same - giving the same user both administration and developer roles in productive systems!
Close the Security Workbench and the SAP HANA Cockpit and move to the next step.