_____ is the real power behind the relational database, allowing the use of independent tables linked by common attributes.
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Q43: A(n) _ links tables on the basis
Q44: In a database context, the word _
Q45: The _ relationship is the "relational model
Q46: _ relationships can be implemented by creating
Q47: In a relational table, each column has
Q49: A table is also called a(n) _
Q50: In a database context, a(n) _ indicates
Q51: A(n) _ is an orderly arrangement used
Q52: To avoid nulls, some designers use special
Q53: The relational operators have the property of
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