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Consider entity type Employee with attributes empNumber (this is unique), empName, and the year when he/she was hired. An employee can either be a technical employee, a marketing e
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
how to find entities
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
courier company er-diagram
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