note-Chapter 5

note-Chapter 5 - Chapter 5 Technology Foundation of Data...

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Unformatted text preview: Chapter 5 Technology Foundation of Data Management Fundamental Data Concepts- Character- Field- Record (primary key)- File- Database: integrated collection of logically related data elements Database Structure- Hierarchical: traditional connected to top (root element)- Network not commonly found in organization- Relational structure o Most widely used o Form of two dimensional tables (relations) o Flat file- Relational operations o Select operation: create a subset of records that meet a stated criterion o Join operation: combine two or more tables temporarily o Project operation: subset of the columns by the select and join operations User decides not to view all of the columns- Object oriented o Key technologies of a new generation o Object: consists of data values describing the attributes of an entity o inheritable- Multidimensional: variation of the relational model that uses multidimensional structures to organize data and express the - Evaluation of database structures...
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This note was uploaded on 01/17/2011 for the course MGMT 105 taught by Professor Kolay during the Winter '10 term at UC Irvine.

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note-Chapter 5 - Chapter 5 Technology Foundation of Data...

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