TrySQL · RADB Dialect

RA Code Practice

Practice Homework-style relational algebra in the RADB-adjacent syntax your class uses.

Medium Output: (name)

Bank Schema

customer(name, credit)
loan(no, type, minCredit, amount)
borrower(cname, lno, due)

\project_{name} (
  \select_{name = cname and lno = no
           and type = 'jumbo mortgage'} (
    customer \cross borrower \cross loan
  )
);

\select_{cond} \project_{cols} \rename_{Alias(...)} R \cross \union \diff \aggr