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What is advantage of two-way association? Two-way association advantages are following: a) Independent of the classes. b) Useful for existing predefined classes that are
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Which database object does not physically exist? A view database object does not physically exist.
Event Occurrence of a process is called event. In other words, the object can receive many input instructions. The changes which occur due to these instructions are known as e
Construct an ER diagram for a hospital along with a set of patients and a set of medical doctors Associate with every patient a log of the several tests and examinations conducted.
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Explain Relational model and their use in DBMS? Relational Model - The relational model was first introduced through E.F. Codd of the IBM Research in the year of 1970. The mode
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.
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