Cards in this set:
Term
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Definition
| is a textual description of the business event and describes how the user interacts with the system to accomplish the task |
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Term
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Definition
| a single occurrence of an entity |
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Term
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Definition
| an entity that inherits its primary key from more than one other entity |
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Term
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Definition
| a data analysis technique that organizes data into groups to form non-redundant, flexible, and adaptive entities |
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Term
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Definition
| defines the minimum and maximum number of occurrences of one entity for a single occurence of the related entity |
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Term
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Definition
| a group of attributes that uniquely identifies an instance of an entity |
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Term
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Definition
| the conservation of inputs and outputs to a process when that process is decomposed to a lower level of DFD |
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Term
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Definition
| is the act of breaking a system into component subsystems, processes and sub-processes |
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Term
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Definition
| a process that has inputs but no outputs |
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Term
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Definition
| is when the inputs are insuffiecient to produce the output |
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Term
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Definition
| a process that has outputs but no inputs |
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Definition
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Definition
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