Question: A key:
Options
A : must always be composed of two or more columns.
B : can only be one column.
C : identifies a row.
D : identifies a column.
The Relational Model and Normalization - General Questions more questions
In the relational model, relationships between relations or tables are....
A functional dependency is a relationship between or among:
Table is synonymous with the term:
Which of the following is not a restriction for a....
For some relations, changing the data can have undesirable consequences....
A relation in this form is free of all modification....
If attributes A and B determine attribute C, then it....
If attribute A determines both attributes B and C, then....
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