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Question What is the difference between logical data independence and


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Cracking the Java Coding Interview ( PDFDrive )

Question What is the difference between logical data independence and
physical data independence? (Core Java)
Answer Logical Data Independence - meaning immunity of external schemas to
changeds in conceptual schema. Physical Data Independence - meaning
immunity of conceptual schema to changes in the internal schema.


immunity of conceptual schema to changes in the internal schema.
Question What is user defined exception? (Core Java)
Answer Apart from
the exceptions already defined in Java package libraries, user can define his own
exception classes by extending Exception class.


Interview Part 3
Book Part-2
SCJP/SCJD– BONUS
Java
Coding Standards.
Clarity and Maintainability.
Core Java Database Issues.
The Java Programmers & Developer exams are challenging. There are a
lot of complex design issues to consider, and a host of advanced Java
technologies to understand and implement correctly. The exam assessors
work under very strict guidelines. You can create the most brilliant
application ever to grace a JVM, but if you don’t cross your t’s and dot
your i’s the assessors have no choice but to deduct crucial (and sometimes
substantial) points from your project. This chapter will help you cross your
t’s and dot your i’s. Following coding standards is not hard; it just requires
diligence. If you are careful it’s no-brainer stuff, and it would be a shame to
lose points because of a curly brace in the wrong place. The Developer exam
stresses things that must be done to avoid automatic failure. The exam uses
the word must frequently. When we use the word must, we use it in the

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