Dictionary and Normalization Guidelines

Essay specific features

 

Issue:

Technology

 

Written by:

John T

 

Date added:

December 28, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 929

 

Was viewed:

9271 times

 

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Essay content:

A data dictionary can be stored in files or documents, or can be stored within a database in the DBMS. For example, a database may contain an employee table that has an emp_no column and an identification_no column. A data dictionary can explain that the emp_no column is an integer value containing the employee number assigned by the system...
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When a new employee is added to the system, a next number value is retrieved from a next number table and assigned to the new employee record. The data dictionary would also explain that the identification_no column is an alpha-numeric value that contains the employee's social security number for US residents and for non-US residents contains the employee's country code followed by their work visa number...
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