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Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on
Q. Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set. Entity is a t
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
What is relationship? Give examples A relationship is an association between several entities. Example: A depositor relationship associates a customer with every account tha
what are the topics in data management
Consider the following frequency counts of some itemsets in a transaction database r : freq({A}, r) = 0.405 freq({B}, r) = 0.510 freq({C}, r) = 0.303 freq({A
Types of Data fragmentation
what do you mean by consistency in rdbms?
Normalize the given relation to 3NF, justifying each step
explain concept of decomposition?
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