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Consider the following relational schema: Doctor(DName,Reg_no) Patient(Pname, Disease) Assigned_To (Pname,Dname) Give expression in both Tuple calculus and Domain calculus for
4. Describe three ways to handle missing field values
sy bcs project of hospital managment system
Where does view definition stored? A view definition is permanently stored as part of the database.
Automated system for appointment with sms and call confirmation with service providers and user has to be initiate automatically. After selecting time and date to use service, s
What Is Recovery? During the life of a transaction, i.e., a after the start of a transaction but before the transaction commits, various changes may be made in a database state
What Count function return in SQL? Count function within SQL returns the number of values. (Count function counts all the not null values in the exact column. If we need to cou
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
How external/conceptual mapping and conceptual /internal mapping is performed
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
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