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What are composite objects?
Objects that have other objects are known as complex objects or composite objects.
Question: (a) Can a set of data requirements be correctly modelled by two or more different ER diagrams? Explain your answer. You may use a small example, if you think it will
Attributes and its types explain?
what is Mapping Constraints? with examples
A Functional dependency is described by X Y between two groups of attributes Y and X that are subsets of R specifies a constraint on the possible tuple that can make a relation
Critically evaluate the bulleted list of information-related items in this case study. How are each contradictory to the notion of being an information-literate knowledge worker?
Consider the 1ollowin8 relation: CAR SALE (Car_id, Option_type, Option_listprice, Sale_date, Option_discountedprice) This relation refers to options installed in cars (e.g., crui
Differentiate between horizontal & mixed horizontal fragmentation?
Structure of Client Server Systems: In client/server architecture, clients show users who require services while servers give services. Both client and server are a combination of
List and also explain the dissimilar stages of DDLC ?
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
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