Which of the following is subtype entity?
a) inherit attributes
b) contain optional attributes
c) is always mutually
d) both a & b
Cardinality express……..number of entity occurrences associated with one occurrence of related entity.
a) undetermined
b) the specific
c) pre-determined
d) programmed
Knowing….number of entity occurrences is very helpful at application software level.
a) maximum
b) minimum
c) exact
d) both a & b
A ……. attribute need not be physically stored in database.
a) composite
b) multivalued
c) single-valued
d) derived
The relationship between three entities is called…..
a) unary
b) binary
c) ternary
d) weak
Attributes may share a………
a) name
b) domain
c) location
d) table
