An ERD is a picture that shows how data and information is processed and transformed by a business system.
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Q39: Data models can be either logical or
Q40: During the analysis phase logical data models
Q41: An entity is the basic building block
Q42: An entity is described by an action
Q43: On an ERD,similar kinds of information are
Q45: In an entity called STUDENT,you might find
Q46: During the analysis phase,analysts create programming models
Q47: ERD's are drawn in several levels: Context
Q48: Entities are further designed with attributes.
Q49: One of the most commonly used techniques
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