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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
Distributed Database Management System
What is a Phantom Deadlock? In distributed deadlock detection, the delay in propagating local information might cause the deadlock detection algorithms to recognize deadlocks
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
The database is to record information about artists for a (music) production company. An artist is the name of a singer or band; the name of the artist, the year the artist started
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
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