Discussion
In a relational database, what is a "tuple" ?
Answer: A
A tuple is A row in a table.
In the relational model, a relation is a table, each tuple is one row (a record), and each attribute is a column.
A column is an attribute, a table is a relation, and a database is a collection of relations.
The number of tuples in a relation is called its cardinality, and the number of attributes its degree.
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