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Frequently Asked RDBMS interview questions and answers for freshers Page 3

(#M40029577) RDBMS QUESTION RDBMS Keep an EYE

Q. Describe the three levels of data abstraction?

A. The are three levels of abstraction:
Physical level: The lowest level of abstraction describes how data are stored.
Logical level: The next higher level of abstraction, describes what data are stored in database and what relationship among those data.
View level: The highest level of abstraction describes only part of entire database

Asked In RDBMS MAN (12 years ago)

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(#M40029850) RDBMS QUESTION RDBMS Keep an EYE

What is a checkpoint and When does it occur?

Asked In RDBMS MAN (12 years ago)

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(#M40029884) RDBMS QUESTION RDBMS Keep an EYE

A B C is a set of attributes. The functional dependency is as follows
AB -> B
AC -> C
C -> B
a) is in 1NF
b) is in 2NF
c) is in 3NF
d) is in BCNF

Asked In RDBMS MAN (12 years ago)

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(#M40029790) RDBMS QUESTION RDBMS Keep an EYE

How is the data structure of System R different from the relational structure?

Asked In RDBMS MAN (12 years ago)

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(#M40029851) RDBMS QUESTION RDBMS Keep an EYE

What are the different phases of transaction?

Asked In RDBMS MAN (12 years ago)

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(#M40029877) RDBMS QUESTION RDBMS Keep an EYE

What is database Trigger?

Asked In RDBMS MAN (12 years ago)

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(#M40029815) RDBMS QUESTION RDBMS Keep an EYE

What is DDL Interpreter?

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(#M40029823) RDBMS QUESTION RDBMS Keep an EYE

What is normalization?

Asked In RDBMS MAN (12 years ago)

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(#M40029868) RDBMS QUESTION RDBMS Keep an EYE

Name the three major set of files on disk that compose a database in Oracle

Asked In RDBMS MAN (12 years ago)

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(#M40029876) RDBMS QUESTION RDBMS Keep an EYE

What is Oracle Block? Can two Oracle Blocks have the same address?

Asked In RDBMS MAN (12 years ago)

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