Data Design

 < Day Day Up > 



In this step, you will reap the benefit of the work you did in the planning phase. This is where you put to use the information you have painstakingly gathered.

What you have now is a list of data that you will put into your directory. The data has one or more data sources and one or more applications using the data. Because the most important job of the directory is to service applications, it is important to know which applications need what data and where the data comes from. A useful approach is to produce a matrix for each application. The matrix should hold the data name, the data type, the information source, and the data source that has to be considered authoritative. The data type is meant as a human-language description — such as password, e-mail, phone number — and not a C-style type declaration such as int, char, etc. Exhibit 4 shows an example of such a matrix.

Application: Phone Book Administration

Row

Data

Type

Source

Source Owner

1

SurName

String

Admin Software

HR

 

13

NT Password

Password

NT SysAdmin

IT Sysadmin

 

21

Phone Number

Phone Number

TELCO SW

Engineering


Exhibit 4: Matrix for Data-Design Process

A mapping between the application and application owner as shown in Exhibit 5 is also very useful. You will then know who owns the data and who owns the application using this data. Both are partners who should be involved in the data design process.

Row

Application

App Owner

1

NT SysAdmin

IT Sysadmin

1

HP System Admin

IT Sysadmin

1

SUN System Admin

IT Sysadmin

1

Phone Admin

Engineering

   

Row

Application

App Owner

31

Web Pages HR

WEB TEAM

31

Phone Accounting

Engineering

   

Row

Application

App Owner

21

PhoneBook

WEB TEAM

21

Phone Accounting

Engineering


Exhibit 5: Mapping between Applications and Application Owner

Once you have documented all applications in this way, you can put this information together in another matrix describing what data the directory should hold. In this matrix, you will list the data name and data type along with the following information:

  • Applications that put the data in

  • Owner of the data, i.e., the entity that is responsible for maintaining the data

  • Whether the data is publicly readable

  • Whether a human user can modify personal data (e.g., password, "yes"; salary, "no")

  • Who can update the data



 < Day Day Up > 



The ABCs of LDAP. How to Install, Run, and Administer LDAP Services
The ABCs of LDAP: How to Install, Run, and Administer LDAP Services
ISBN: 0849313465
EAN: 2147483647
Year: 2003
Pages: 149

Similar book on Amazon

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net