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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
Critically explained the benefits and limitations of different database technologies with proper examples
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
WHERE and HAVING clause in SQL ? The WHERE clause is commonly used for implementing conditions on each tuple of the relation. The HAVING clause is used in combination along wi
Define the notation for classes and atrributes The notation for class, attribute, and operations are shown below: Figure: Class with attributes and operations A
Determine the Derived attribute to avoid re-computation Each class box consists of an ordered list of attributes and operations, each represented as a next string. We can find
Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pictori
explain normalisation
A customer places orders for parts and belongs to a particular industry group. An individual order is taken by a particular sales representative on a specific date and the sales re
In an organization several projects are undertaken. Each project can employ one or more employees. Each employee can work on one or more projects. Each project is undertaken on the
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