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What are the advantages and disadvantages of merging an association into a class?
Advantages:
i) Less number of tables
ii) Faster performance due to the fewer tables to navigate.
Disadvantages:
i) Less design obstinacy
ii) Reduced Extensibility
iii) Increased difficulty
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
how oracle can be used
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Do you have experts of the dbms
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List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline the
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