I wanted to create tables and establish relationships between them, so I worked on it a bit. Although I didn’t detect any errors in the code I wrote, I still haven’t been able to resolve the issue. I’m stuck on this error and haven’t been able to fix it in any way. Please help.

I am trying to use an update statement in a cursor but values like the table name (and column names) are changing with every record fetched from the cursor. I am storing the table name and column names in a table and use these as parameters for the update statement. With each loop through the cursor, I am initializing a variable with the update statement.
My question is, how do I execute an update statement which is stored in a variable. I want to execute the update statement with each loop in the cursor.

In my application I am trying to achive below output using PL/SQL.