synchronization issues is one of the challenge in information system. explain

People information is generally captured in a variety of source applications. This presents some synchronization issues.

Imagine you call your cell phone company and give them a change of address. The customer database may be updated but the next day, a bill is sent to the old address by the billing system, which was not synchronized with the master customer database. This is a common type of data challenge.

Suppose your company gives away free product samples and offers to send them by mail to people who fill out questionnaires at retail stores.

source: http://www.information-management-architect.com/people-information.html

People and organizations share some key information concepts that need to be tracked. Explain

• Relationships. Persons may have relationships with other persons or organizations. A person may have a relationship as employee with one department and then switch to another; a customer may have a relationship as a client with one sales representative and then switch to a new sales territory or sales representative.
  
  
• Addresses. People and organizations both have addresses;
  
  
• Contact method. People and organizations are both contacted via email; web site URL’s, phone numbers, fax numbers; and
  
  
• Contact information. Most companies have a need to track communications such as email, customer contact, etc.