Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 26 Jul 2017 My Price 8.00

primary key attributes

Using the Hotel schema, assume the following indexes exist:

* a hash index with no overflow on the primary key attributes, roomNo/hotelNo in Room;

* a clustering index on the foreign key attribute hotelNo in Room;

* a B+ -tree index on the price attribute in Room;

* a secondary index on the attribute type in Room.

(a) Calculate the cardinality and minimum cost for each of the following Selection operations:

(b) Calculate the cardinality and minimum cost for each of the following Join operations:

(c) Calculate the cardinality and minimum cost for each of the following Projection operations:

 

Answers

Maurice Tutor
(5)
Status NEW Posted 26 Jul 2017 08:07 PM My Price 8.00

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