The _________ provides a set of operations that take one or more relations as input and return a relation as an output.
A. Schematic representation
B. Relational algebra
C. Scheme diagram
D. Relation flow
Answer:B
The _________ provides a set of operations that take one or more relations as input and return a relation as an output.
A. Schematic representation B. Relational algebra C. Scheme diagram D. Relation flow