We touched on operators in our discussion about SELECT statements using the = operator, but let's expand on our definition/understanding of what an operator is. Operators are a part of a languages ...

In the previous lessons we introduced the notion of relation as a table representing a set of tuples (rows). Therefore, in relational algebra, we allow applications of operators of union, intersection ...

Abstract: Current database management systems have their limitations when it comes to handling imprecise data. Several DBMS prototypes emerged in this regard by merging the laws of fuzzy set theory ...