CASE STUDY CTTS – MILESTONE 09
This makes a one-to-one relationship. System should be easy to update in the field. BarCode is the primary key for both EquipmentComponent and Inventory. Requirement The system should allow technicians to view and edit hardware component information in the field. But a long text field such as the client name would make a poor primary key for Client, consuming extra storage space, slowing down database operations, and probably requiring extra typing.
Technicians going out to handle the service calls often face incomplete information. Where do you stop? Scope Definition Solution Page: These two entities could be combined into one entity, but with their different uses, a case can be made for have two entities. In this milestone enough information was provided to be able to quantify some but not all annual benefits. Logon Multiple Values of Information i. The system must make it easy for technicians to update the component and configuration information.
Some may provide general descriptions of problems while others may go to the extra effort of giving concrete examples. Each ServiceRequest will be worked on with zero or more WorkRecords initially zero but eventually at least one.
The primary keys are based on how the user uniquely identifies each entity. The system should allow technicians to view and edit software configuration information in the field.
The proposed system could provide a customer history that would allow for better service. Techs should be able to mark a service request as resolved The system milextone be able to mark as service request as resolved if nothing more is heard from the client after the passage of a set amount of time Classification Functional Functional Non-functional Non-functional Functional Non-functional Non-functional Non-functional Functional Functional Non-functional Functional Non-functional Functional Functional Prepared by Gary B.
Primary keys kilestone shown at the top of the list of attributes and marked with PK. Causes and Effects Receptionist takes calls and route to technicians with phone transfer or e-mail. The form that follows illustrates one possible solution. If you will be doing Milestone 5 as a separate assignment, you may want to withhold this solution.
Only techs should be able to enter new equipment to the studdy. A component that has been checked into inventory A piece of information concerning software configuration for the Client and possibly for a piece of equipment. In most activities explanations for why things were done as they were have been provided to aid in your milesttone of the solution.
Case study CTTS milestone 09 application architecture
This diagram was created in Microsoft Visio. This was drawn in Microsoft Visio. A request for service on Equipment. But make sure each non-key attribute exists in only one entity. Some, but not all, of the configuration records could be associated with miledtone piece of Equipment. Optional Entities A classification of Equipment. The following tables studu the attributes identified milestoen each form and the interview.
A Client submits one or more ServiceRequests, which may related to a piece of Equipment. Primary keys cannot be changed in some systems, and it is never good practice.
These two entities could be combined into one entity, but with their different uses, a case can be made for have two entities. The real problem with adding purchase orders to CTTS is that it opens the door on accounting functions.
Stress to the students that this matrix is a living document.
Case Study CTTS – Milestone 02 Problem Analysis Solution_图文_百度文库
Technicians going out to handle the service calls often face incomplete information. Visio cannot easily produce a Context Diagram exactly like the one shown in chapter 5. The system must make it easy for technicians to update the component and configuration information.
There is also more than one wrong answer. This, of course, is DFD style. Clients, technicians, and management should be able to view unresolved service requests and the history of work performed on them.
The proposed system could allow clients to enter service requests online, 90 receptionist time plus providing more efficiency. In the present system, the computer name acts as a primary identifier.
Requirement The system miletone allow technicians to view and edit hardware component information in the field. One approach could be the use of barcode scanning.
A computer, printer, or other piece of technology equipment that is in use. System Constraint Internet application must have adequate security.