Types of System Requirements

To simplify the system analyst in determining keselurnhan needs in full, then the analyst needs the system divides into two types. The first type is the functional requirements. Functional needs is the kind of demand that contains any processes that will be performed by the system. Functional requirements also contain any information that should be there and produced by the system. The second type is nonfunctional requirements. This requirement is a requirement type that contains a property that is owned by system behavior, include:

1. Operating
In this section we have explained technically how the new system will operate. Platform system used is defined, whether using Windows or Linux for example. To develop a software system is also determined. Specific hardware required is also determined. The system architecture is also described, whether the 2-tier, 3-tier, or the other.

2. Performance
In this section explain how good the performance of software developed to process data, display information, and complete the overall business process at hand. Efficiency and software are also included.

3. Security
Contains a statement about the security needs of the application of security mechanisms, data, and transactions to be implemented on the system. Password system is used will be as to what specific hardware and software for security systems are also described.

4. Politics and Culture
Needs regarding the contents or associated with political and cultural issues specified in here. Fill in the politically and culturally should be guaranteed not to cause a negative perception of the system.

System Requirements

Objectives for the analysis phase is to understand the truth and the need for new systems and develop a system that accommodate those needs, or decide that the actual development of the new system is not required. Determination of system requirements is the most crucial step in the SDLC phases.

System requirements can be defined as follows:

• Statements about what should be done by the system.
• Statements about the characteristics of a must-have system.

Service System

Service system have different characteristics from other types of services. Entanglement between rapidly evolving technologies, methodologies and knowledge absorption capabilities for managing the delivery of service very closely. Difficulty to identify the needs of users, the diversity of types and characteristics of information system services that are not possible generalization, increase the complexity of the service.

The key to success in service user satisfaction lies in how the Information Systems Unit Information System to manage human resources and methodology used in his ministry. Management of these factors properly, will produce an information system services that are reliable, accurate, timely, effective and able to contribute adequately to the organization secatra whole.

To measure user satisfaction with both required a measurement instrument that is not only appropriate, but also have high quality.

Here are some criteria for quality assessment in which a system can be said to be bad:

1. The system produces a product that is not accurate.
2. The system produces products that are not consistent.
3. The system produces a product that is not trusted.
4. The system is easy to learn.
5. The system is easy to use.
6. System is awkward to use.
7. The system is flexible.

Efficiency Analysis

Efficiency concerns how to generate as much output with minimum input. Here is an indication that a system can be said to be inefficient:

1. Much time is wasted on the activities of human resources, machines, or computers.
2. Data is input or copied to excess.
3. Data processed in excess.
4. Information is generated in excess.
5. Effort required for these tasks are too excessive.
6. Material required for these tasks are too excessive.