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Describe in brief about DBMS ?
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
explaination
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
A relation instance indicates as r is a collection of tuples for a given relational schema at a exact point of time. A relation state r of the relation schema R (A 1 ,A 2 ,.....
what is data link layer
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
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
Explain how you can define an object model of a system. A list of terms that shall be used by end users to describe state and behaviour of objects in system. Different use
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