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Explain the Fundamental concepts of object-orientation
Software developers, data base administrators (DBAs) need to be familiar with fundamental concepts of object-orientation. The object-oriented (OO) paradigm is a development strategy based on concept which systems should be built from a collection of reusable components known as objects. Instead of separating functionality and data as is done in structured paradigm, objects encompass both. While object oriented paradigm sounds similar to structured paradigm, but it is actually quite different. An ordinary mistake which many experienced developers make is to applying same software-engineering principles to OO design. To get success one must recognize that OO approach is different from the structured approach
Define deadlock prevention. Deadlock prevention is a set of methods for ensuring that at least one of the four essential conditions like mutual exclusion, hold and wait, no pre
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
er diagram on cosmetics.
Consider the relations described below: PHYSICIAN (regno, name, telno, city) PATIENT (pname, street, city) VISIT (pname, regno, date_of_visit, fee) Where the regno and pname ide
Define decision tree classifiers? As the name suggests decision tree classifiers use a tree: Every leaf node has an associated class, and every internal node has a predicate as
read-set(T) : Each data items that are read by a transaction T Timestamps : for all transaction T, the start-time and the end time are reserved for all the three phases.
What is NULL? Simply NULL means not in value.
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Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
a project based on normalization with first, second and third normalization. There need to be a diagram also
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