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Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
What are the advantages and disadvantages of using a database system. Sol. Advantages of Database System (DBMS) : (1) Data Redundancy and Inconsistency: Since differen
What is theta join explain? Theta Join - The theta join operation is an extension to the natural-join operation which permits us to merge selection and a Cartesian
Have database built but having problems with some questions that go with the database
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Class Diagram A class diagram is required to support functional necessity of system. In a static design view, class diagram is used to model vocabulary of the system, simple c
Types of Data fragmentation
Creating a view: A query can be embedded within the CREATE VIEW STATEMENT A query can have complex select statements containing join, groups and sub- queries A quer
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