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Determine the OBJECTIVES of object design
After passing through this unit, you should be able to:
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
What is theta join explain? Theta Join - The theta join operation is an extension to the natural-join operation which permits us to merge selection and a Cartesian
Draw an ER diagram for company''s database schema
Make SQL statements for the following scenarios. Your response should contain SQL statement, output and any other assumptions you have made to arrive at the answer. For Colorado cu
What is a Data Flow Diagram? Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes whic
Availability: A site having the copy of a replicated relation fails, even then the relation may be found in another site. Therefore, the system may carry on to process at least th
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
what is union compatable?
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
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