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Problem Explain at least five relational algebraic operators with a suitable example. Note: All the above descriptions should be done by taking at least two examples from ou
What is a database? At any given time, they're storing a tremendous amount of information - inventory, in the case of Amazon, messages and interrelationships in the case of Tw
Define reference file
What is inheritance? Define it in detail? Inheritance Inheritance can be at the levels of types, or at the level of tables we first consider inheritance of types, then i
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Define weak and strong entity sets? Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets. Strong entity set
In the first unit of this block, you have been given with the details of the Database Management System, its structure, advantages etc. This unit is an attempt to give you informat
(a) Why did SAP introduce the extended star schema?
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
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