what are referential integrity constraintsa value
What are referential integrity constraints?
A value that appears in single relation for a given set of attributes also appears for a particular set of attributes in another relation.
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what is triggertriggers are statements that are implemented automatically by the system as the side effect of a change to the
advantage of electro chemical machining1 as the tool does not come in contact with the work there for tool wear is practically nil2 the metal removal
q how is the respiratory system in aquatic molluscs characterized what adaptive respiratory structure do terrestrial molluscs presentin terrestrial
what are domain constraintsa domain is a set of values that might be assigned to an attribute all values that appear in a column of a relation must
what are referential integrity constraintsa value that appears in single relation for a given set of attributes also appears for a particular set of
q which kind of circulatory system do molluscs have how can it be compared to the respiratory system of annelidsmolluscs with the exception of
what is assertion mention the forms availablean assertion is a predicate expressing a condition that we wish the database always to satisfydomain
q how is the large size of some cephalopods related to the kind of circulatory system they presentin cephalopods the circulatory system is closed and
what is the need for triggerstriggers are useful mechanisms for alerting humans or for starting particular tasks automatically when particular
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