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Describe the different RAID levels. Discuss the choices of the different RAID levels for different applications. Ans: There are several combinations of these approa
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
An entity type usually has an attribute whose values are distinct for every individual entity in the collection. Such an attribute is known as a key attribute and its values can be
Lost Updates : Suppose the two transactions T3 and T4 run simultaneously and they happen to be interleaved in the following way (suppose the initial value of X as 10000):
Difference between SQL and SQL*Plus SQL SQL*Plus SQL is a language SQL *Plus is an environment It is bas
give me a diagram about physical or internal level
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
Why, generally does an object-oriented system use the relational DBMS? The reasons for using relational DBMS for OO systems could be any combination of following: a. Many or
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