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For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the entity on the other side of the relation (say E2) as a foreign key attribute in the table of E1. We contain all easy attributes (or easy components of a composite attributes of R (if any) in the table of E1).
For example, the works_in relationship among the DEPARTMENT and FACULTY.
For this relationship choose the entity at N side, i.e., FACULTY and add primary key attribute of one more entity DEPARTMENT, i.e., DNO as a foreign key attribute in FACULTY.
FACULTY (CONTAINS WORKS_IN RELATIONSHIP
ID
NAME
ADDRESS
BASIC_SAL
DNO
State about the Tables- DBMS Data is stored in columns and rows (much like a spreadsheet -main difference is how data is organised). Every row in a table is known as a record
Define Deadlock prevention These protocols make sure that the system will never enter a deadlock state. There are two methods to deadlock prevention. One approach makes sure t
How external/conceptual mapping and conceptual /internal mapping is performed
Critically explained the benefits and limitations of different database technologies with proper examples
Distributed Database Management System
what is lossless & dependency preserving decomposition ?
Define two-phase locking protocol. Ans: Two-phase locking is significance in the context of ensuring that schedules are serializable. The two-phase locking protocol defines a p
construct an er diagram for a hospital with a set of patients and a set of medical doctors. associate with each patient a log of various test and examination conducted.convert er d
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Step 1 . Using Oracle, create the tables identified in the preferred solution for Assignment 2. Technicians (ZipCode, TechnicianID, FirstName, LastName, Street, City, State, Home
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