EBK STARTING OUT WITH VISUAL C#
EBK STARTING OUT WITH VISUAL C#
5th Edition
ISBN: 9780135204818
Author: GADDIS
Publisher: VST
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Chapter 11, Problem 4SA

Explanation of Solution

Base class and derived class:

  • In C#, the inheritance concept involves two classes. They are base class and derived class.
  • A base class is also referred as “general class” or “super class” and a derived class is referred as “specialized class” or “sub class”.
  • The derived class is an extended kind of the base class. This means a derived class can inherit the fields, properties, and methods from the base class without rewriting them in the derived class.
  • Extra methods can be added in the derived class which implies the specialized kind of the base class...

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Subject: Database management system Explain in easy way with write  handwritten note   Test if the following schedule is conflict serializable or not and explain R1 (A), R2 (D), W1 (B), R2 (B), W3 (B), R4 (B), W2 (C), R5 (C), W4 (E), R5 (E), W5 (B).
Subject: Database management system Explain in easy way with write  handwritten note   Test if the following schedule is conflict serializable or not and explain R1 (A), R2 (D), W1 (B), R2 (B), W3 (B), R4 (B), W2 (C), R5 (C), W4 (E), R5 (E), W5 (B).
Subject: Database management system Explain in easy way with write  handwritten note a. What is lossy decomposition? Check whether the following decompositions are lossy or lossless. (i) Let R=ABCD, R1 = AD, R2 = AB, R3 = BE, R4 = CDE, R5 = AE, F={ A->C, B- >C, C->D, DE->C, CE->A} (ii) R (XYZWQ), FD= {X->Z, Y->Z, Z->W, WQ->Z, ZQ-> X, R1 (XW), R2 (XY), R3 (YQ) , R4 (ZWQ), R5 (XQ) b. Eliminate redundant FDs from (i) F={X->Y, Y->X, Y->Z, Z->Y, X->Z, Z->X} (ii) F = {X->YZ, ZW->P, P->Z, W->XPQ, XYQ, YW, WQ ->YZ}

Chapter 11 Solutions

EBK STARTING OUT WITH VISUAL C#

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