Data Object
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def
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a representation of almost any composite information that must be understood by software
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types
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external entity — anything that produces or consumes information (e.g., a person, an external system)
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a thing — e.g., a report or display
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an occurrence — e.g., a telephone call
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an event — e.g., an alarm
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a role — e.g., a salesperson
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an organizational unit — e.g., an accounting department
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a place — e.g., a warehouse
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a structure — e.g., a file
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characteristics
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described by its Attributes (Data Modeling)
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connected to other data objects through Relationships (Data Modeling)
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must have one or more attributes designated as an identifier (key value / unique value)
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