Yes, You can create a custom table and custom data in class implementation.Please refer to this link, It has detailed stepshttps://developers.sap.com/tutorials/abap-environment-persistence.html
Hi Pooja,Incase you are using the Free Trial account, the Sap build apps service is only available in region AWS US East (VA).Please follow these steps steps shown in this video https://youtu.be/ZpQM2B1v2GY these steps are clear and I have followed ...