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4.3.1 Conceptual Design
The conceptual design of database is the result of the first understanding of the application and illustrates the application at its simplest. To answer the question raised
during the assessment, conceptual design will defines the objective of the database and the data needed for the system. Once the required data has been identified, the data model that
identifies entities and their relationships was designed.
4.3.1.1 DFD Level 0 Context Diagram
The context diagram is the highest level and represents the overall system, means context diagram shows all the external entities that interact with the system through data or
information flow over the system. The Context Diagram for this study shows three main entities and what they currently share in the way of information; administrator, data source
and user Figure 15. According to Figure 15, information flows be started from The Regulations
Government Regulation No. 812001, Ministerial Decree No. Kep-51MENLH101995 or Kep.Gub.No.61999
about Standard of Waste Water Quality for Industrial Activities in West Java on a Wastewater Quality Standard for Industrial Activities.
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Figure 15.
DFD Level 0 Context Diagram The next step of the information flows, the industries will support the data
industrial profile and proposal to the local government Pemda through IWMS. The Environmental Agency DLH has supporting data to the system and can get information on
industrial profile or regular wastewater report from industry through IWMS, until they can do monitoring, evaluation and decision making process. In the same case, Local
Government can get information on proposal and industrial profile as references for monitoring, evaluation and license decision consideration. After the process runs well, the
industries can get information on industrial wastewater, production report and also license agreement. According to these information, the industries can conduct the self monitoring,
54 evaluation and internal decision. All of the processes can be monitored by KMLH The
Ministry of Environment through IWMS, until they can do the decision policy in the national level. In this design, publics can get information from the systems and also support
the stakeholder information and environmental cases, respectively.
4.3.1.2 DFD Level 1
DFD Level 1 presents more detailed flow of the information process. There are five processing in this flows, e.g.: 1 Quality Standard Process, 2 Industrial Identification
Process, 3 Industrial Permitting Process, 4 Pollution Monitoring Process and 5
Monitoring, Evaluation and Decision Process see Figure 16.
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Figure 16. DFD Level 1
According to Figure 16. at least five output can be processed from the system, e.g.
1 Industrial Profile, 2 Quality Standard, 3 Monitoring Result Production Industrial Waste water Status, 4 Monitoring Result River water Quality Status, and 5
Monitoring, Evaluation and Decision.
4.3.1.3 Entity Relationship Diagram
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