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Consider a relation s over the attributes A and B with the following characteristics: 5,000 tuples with 10 tuples per page A 2-level B+ tree index on attribute
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
Example :; transfers transfer_amount from x's account to y's account ; Supposes x&y both accounts exist TRANSACTION (x, y, transfer_amount) Start transaction IF X AND Y
Problem 1 What is a Data Warehouse? Mention its advantages 2 Explain the Top-Down and Bottom-up Data Warehouse development Methodologies 3 What is Data Transformation? Ex
What is multiplicity in the associations? Give an example to explain multiplicity? Multiplicity in association indicate number of objects participate in any relationship. For
Explain CNT in the respects of QBE ? CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
how to prepare a data dictionary for online examination system for certified courses?
explaination
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