Quote: some records correspond one-to-one with entities; the entity exists only if the record exists; referential integrity and primary keys

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At best, we will have a one-to-one correspondence … list" for the population of the corresponding entity … they have a corresponding occurrence of the record … [Date, C.J., An Introduction to Database Systems, 1981], wherein entities of certain types may only be referred to …   Google-1   Google-2

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Topic: existence of database entities (19 items)