Size of different information system(s): Departmental/Organizational/Inter- organizational

Mercedes-Benz Company use the three categories of the information system the Departmental information system which connect between the different department of the Mercedes-Benz Company like the supply department ,human resources department and finance and accounting department also all other department its Combine all under the enterprise resources planning system (ERP) which include all internal and external management information across an entire organization and it work to make the business and planning inside the organization become easier and more efficient using the network that make the flow of information inside the company more effective , and make working with business activity more faster and reliable because the operating works at the real time like for example dealing with customer car order , also bill of the material used of producing the cars ,supply chain planning and the company receivable . Whereas for Organizational information system the company use a lot of information system like the Decision Support Systems (DSS) this system use to support the organizational Decision making and using the what if analysis for future planning, moreover the Mercedes company use the Office Automation Systems (OAS) to support the data workers who share information by using different software like spreadsheets, desktop publishing, communication through voice mail, email, teleconferencing. Finally the Inter- organizational system for Mercedes its system allows the flow of information to be controlled by more than one organization in order to reach a desired supply-chain management system and to have more advantages of having exchange of technologies between organizations, Mercedes did that by having the IPhone Interface Plus information system that enable Mercedes company to using Smartphone’s as a media Center once the iPhone connect to the vehicle electronics it well become easy to use the hardware controls , and it become easy to larger the display on the vehicle’s dashboard to control and view content while driving and enjoy iphone feature. ,The Mercedes-Benz app have been designed specifically for the in-car use, making it easy to interact with social networks like email, GPS services, Twitter, and Face book , furthermore its use to Tracking the service progress of your vehicle and any problem the system find in the car for faster checking of any errors face the car and this provide better service for the Mercedes –Benz customers .