In precedence of set operators, the expression is evaluated from

Related MCQs

• In precedence of set operators the expression is evaluated from:
• In precedence of set operators the expression is evaluated from:
• The          connective tests for set membership, where the set is a collection of values produced by a select clause. The           connective tests for the absence of set membership.
• If an entity set is a lower-level entity set in more than one ISA relationship, then the entity set has
• A system is in a              state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.
• ANSI-standard SQL allows the use of special operators in conjunction with the WHERE clause. A special operator used to check whether an attribute value is null is
• For a weak entity set to be meaningful, it must be associated with another entity set, called the
• There are similarities between the instructor entity set and the secretary entity set in the sense that they have several attributes that are conceptually the same across the two entity sets: namely, the identifier, name, and salary attributes. This process is called
• Relation R with an associated set of functional dependencies, F, is decomposed into BCNF. The redundancy (arising out of functional dependencies) in the resulting set of relations is
• Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set?