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Notice
that the database design contains tables for “things” such
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as
the Clients table and the table for the medical professional’s
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information
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These
tables represent information about entities
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The
Visits table is different in an important way …
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It
represents information about a relationship between
entities,
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namely
that the Client and the MedPro are connected or
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associated
by a visit
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Pairing
the keys of the related entities is the mechanism
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The
relational database model (that’s the set of concepts on
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which
modern databases like Access are built) represents
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information
about entities and relationships
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