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What is TRC and DRC in DBMS?

What is tuple relational calculus (TRC) and domain relational calculus (DRC)? How do they differ with relational algebra?

I am new in DBMS field. But I have learned basics of relational algebra.

Solution
    • In relational algebra, variables contain relations and operators derive relations by transforming or combining relations.
    • Relational calculii use set builder notation and logical connectives to define a new relation by describing the tuples and attributes that make it up.
    • In tuple relational calculus, variables denote tuples and attributes are referred by name.
    • In domain relational calculus, variables denote attributes and tuples are constructed via a positional notation.