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WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Which of the operations constitute a basic set of operations for manipulating relational data? Relational algebra operations constitute a basic set of operations for manipulati
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Write a short note on oracle Instance? Oracle Instances: An instance is the (executed) Oracle software and the memory they use. It is the instance which manipulates the data s
Use a Set operator to create a list of academics who have written or co-written less than 5 papers and also have greater than 3 interests. List their academic number in the output.
Explain the use of constraints in functional model with suitable example. A constraint shows relationship between two objects at same time, or among various values of the sam
Draw an ER diagram for company''s database schema
Forward Recovery (Redo): In this system the committed changes made by a transaction are reapplied to a previous copy of the database. In simpler
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
give some example real-life situations where DBMS are most suiitabe
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