A parent table is a table that contains a primary key that is related to at least one foreign key in a table. A parent table can also be a dependent table.
Examples
TABLE1 has a foreign key that references the primary key in TABLE2. TABLE2 is a parent table; it is a parent of TABLE1.
TABLE2 has two foreign keys: one references the primary key in TABLE3 and another references the primary key in TABLE4. TABLE3 and TABLE4 are parents of TABLE2.
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