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What is the use of unique function?
UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Consider the two relations given below Given that A is the primary key of R, D is the primary key of S and there is a referential integrity among S.A and R.A, discuss all
please give me introduction to full data in D B M S in a short assignment
Using your cache simulator and using smalltex.din as your memory trace determine the total miss rate, compulsory miss rate, capacity miss rate, and conflict miss rate for the follo
Question: (a) Can a set of data requirements be correctly modelled by two or more different ER diagrams? Explain your answer. You may use a small example, if you think it will
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
Question 1 Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? Question 2 With a necessary example explain (i)
i would like to ask if you will do assignment of database number of words 1500 and how much
List and explain the memory constructs of the Oracle 12c databases?
why older data models are being replaced by new data models.
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