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Category > Computer Science Posted 14 May 2017 My Price 5.00

Why does DBMS store data on external storage?

Exercise  8.1   Answer  the  following  questions  about  data  on  external  storage  in  a DBMS:

 

1.    Why does    DBMS store data on external storage?

2.   Why are I/O costs important  in  a  DBMS?

3.     a   id?   Given         record's  id,   how  many  I/Os  are  needed  to  fetch  it into main  memory?

\Vhat  is  the role  of the  buffer manager in      DBMS?  What   the role of the disk space manager?   How  do  these  layers  interact  with  the  file   and  access  methods layer?

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Alpha Geek
(8)
Status NEW Posted 14 May 2017 05:05 PM My Price 5.00

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file 1494781979-Answer.docx preview (187 words )
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