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Data Volume and Usage Analysis - Database Management - Lecture Slides

Slides, Introduction To Database Management

Post: November 3rd, 2012
Description
Data Storage Concepts, Classification, Physical Storage Media, Speed of access, Cost per unit of data, Reliability, RAID, Multi Mirroring are the main points of this lecture.
Data Storage Concepts, Classification, Physical Storage Media, Speed of access, Cost per unit of data, Reliability, RAID, Multi Mirroring are the main points of this lecture.
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Contents
Database Management System Lecture - 22 Docsity.com Data Volume and Usage Analysis Statistics about the size and usage of data plays critical role in data processing efficiency Final step of logical DB design or first step in physical DB design Docsity.com Data Volume and Usage Analysis Statistics collected during analysis phase from the users of the system May not be accurate; give the tentative and relevant figures Docsity.com Data Volume and Usage Analysis Docsity.com Composite Usage Map 200 75 PART 1000 SUPPLIER 50 70 40 % O 70 % 60 140 (50) 40 MANUFACTURED PART 400 PURCHASED PART QUOTATION 2500 80 700 40 Docsity.com Designing Fields Field is smallest unit of application data; corresponds to a simple attribute Involves different decisions about fields Docsity.com Choosing Data Type Data type is defined as set of values along with the operations that can be performed on them Precisely depends on the particular DBMS Docsity.com Choosi..

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