describe identifying relationshipidentifying
Describe identifying relationship?
Identifying relationship: It is relationship among strong entity and a weak entity it is represented through a doubly outlined diamond in Chen notation.
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what are the different layers in r3 systemthere are three layer-presentation layerapplication layerdatabase
determine a program that is in execution is known asprogram in execution is known as
what are the phases of background processingphases are- job schedulingjob processingjob
what components of the re system initiate the start of background jobs at the specified timethe batch scheduler initiates the begin of background
describe identifying relationshipidentifying relationship it is relationship among strong entity and a weak entity it is represented through a doubly
interval among the time of submission and completion of the job is known
describe specialsation and generalizationspecialisation generalization this is a top down and bottom up approach to the design of database it
define instancean instance is an administrative unit in which components of r3 systems giving one or more services are grouped together the
explain what is aggregation aggregation this is used whenever we intend to show a relationship between an entity and the relationship there is no
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