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Determine the term- Active values
An active value is that has dependent values. Every dependent value registers itself with active value that contains a set of dependent values and update operations. An operation to update base value triggers updates all the dependent values, but calling code need not explicitly invoke updates.
Evaluate, compare and contrast the two methods of relational database design namely top down method and Bottom up method. What will be your choice if you are asked to select a meth
atient(PNumber, Name, NHS_no, Amount_due, DNO, Doctor, Medical_Treatment), relation of schema Staff(StaffNum, Name, DNO, Task) and relation of schema Dept(DNO, Name, Location, Dire
Consider the following frequency counts of some itemsets in a transaction database r : freq({A}, r) = 0.405 freq({B}, r) = 0.510 freq({C}, r) = 0.303 freq({A
Define the notation for classes and atrributes The notation for class, attribute, and operations are shown below: Figure: Class with attributes and operations A
what is the importance of back up files
List some instances of collection types? a) sets b) arrays c) multisets
why are older data models are being replaced by new data models
Reflects organisational structure: Many organizations are distributed over various locations. If an organisation has many offices in dissimilar cities, databases used in such an ap
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
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