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What are the aggregate objects in the data dictionary?
Differentiate between various levels of data abstraction? Data Abstraction - Abstraction is the procedure to hide the irrelevant things from the users and represent the rele
File Organisation And Its Types Just as arrays, trees, lists and other data structures are used to execute data Organisation in main memory, a number of planning's are used to
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Using Relational Algebra which query finds customers, who have a balance of over 1000 ? Using Relational Algebra Π Customer_name( σ balance >1000(Deposit)) is query to find cu
Hashed File Organisation Hashing is the most common form of purely random access to a database or file. It is also used to access columns that do not have an index as an optimi
Performance of Various Concurrency Control Mechanisms
What is conceptual model ? A conceptual model is a independent of both hardware and software.
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
Write A short note on temporary tables? Temporary Tables - Temporary tables exists solely for a particular session, or whose data persists for the duration of the transaction
Normalize the given relation to 3NF, justifying each step
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