This category includes graphical languages such as QBE (Query By Example), implemented in DBMS such as Access, as well as the algebraic language studied in this section. On the other hand, an ...

Write a relational algebra expression for this query that uses the division and natural join operators. (b) Given relations R (A,B) and S (B), write a relational algebra expression to compute the ...

The server part embeds an ATL model checking algorithm implemented using ANTLR and Relational Algebra expressions translated into SQL queries. The server side of our tool was published as a Web ...

The paper proposes a method of parsing for relational algebra expressions, which is based on the use of reverse Polish notation (postfix notation). The operation algorithm of the shunting yard, ...