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The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
growing phase and shrinking phase are disjoint, why ?
Why older data models are being replaced by new data modelling 100 words accepted#
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
Examine about the Behavioural Diagrams The main objective of behavioural diagrams is to visualize, specify, construct and document dynamic aspects of a system. The interactio
how oracle can be used
Differentiate between various levels of data abstraction? Data Abstraction - Abstraction is the procedure to hide the irrelevant things from the users and represent the rele
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
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