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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 can be assigned to teach a lot of courses and one course may be taught by a lot of faculty members.
Relationship among book and author.
One author can explained a lot of books and one book can be written by more than one authors.
More about Relationships and Entities
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
Question: (a) What is ODBC and what is its function? (b) What is Web application server, and how does it work from a database perspective? (c) What does e-commerce mean
Project: Microsoft Access You have been asked by the ABC Tanning Salon to create a database that can be used to track the salon's customers. You are to create a table in Access
Explain the Cascadeless Schedule A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit
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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?
please describe the data base management with the easy example &give the application?
(a) What is a Sub-Query? (b) What is the difference between a scalar sub-query and a tabular sub-query? (c) Write an equivalent SQL statement to get the Name of Product wh
Give short note on the following terms:Dirty pages and ETL a.) Dirty pages. These are buffer pages which comprise modifications which haven't been written to disk. b.
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
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