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what are the purposes of dbms in details
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons
What is multiple relationship ?
Spanned and unspanned organisation? Spanned and unspanned organization: If records are not permited to cross block boundaries then the organisation is called unspanned record
Explain Recursive relationship type? Recursive relationship type: A recursive relationship is one in that the similar entity participates more than once in the relationship
What are the various symbols used to draw an E-R diagram (any 3)?
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
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