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Quote: if a pseudo-record key allows zero participation, it can merge by padding with null values
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fact-based analysis for database design
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Two pseudo-records may only be merged if their … An "ideal" merge is thus possible when the … [p. 115] In many cases, a pseudo-record whose key … sort of "null" values for the related entity. … Google-1 Google-2
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Topic: fact-based analysis for database design (15 items)