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An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between entities (instances of those entity types).
One of the first well defined function models, was the Functional Flow Block Diagram (FFBD) developed by the defense-related TRW Incorporated in the 1950s. [5] In the 1960s it was exploited by the NASA to visualize the time sequence of events in a space systems and flight missions. [ 6 ]
Example of a system context diagram. [1] A system context diagram in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it. [2] This diagram is a high level view of a system. It is similar to a block diagram.
The Ministry of National Development Planning/National Development Planning Agency (Indonesian: Kementerian Perencanaan Pembangunan Nasional/Badan Perencanaan Pembangunan Nasional) (abbreviated PPN/Bappenas) is a ministry of the Republic of Indonesia that has the task to oversee government affairs in the field of national development planning to assist the President in organizing state ...