Introduction to Database System Which of the following is a group of one or more attributes that uniquely identifies a row? Determinant Key Tuple Relation Determinant Key Tuple Relation ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System After you _____ a record, many data management the environments require you to issue a command to save the changes you made. Delete Update Index Sort key Delete Update Index Sort key ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The relational database model was created by E.F. Codd. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not a restriction for a table to be a relation? No two rows in a table may be identical. The cells of the table must contain a single value. The columns must be ordered. All of the entries in any column must be of the same kind. No two rows in a table may be identical. The cells of the table must contain a single value. The columns must be ordered. All of the entries in any column must be of the same kind. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n): transitive dependency. normal form. referential integrity constraint. insertion anomaly. transitive dependency. normal form. referential integrity constraint. insertion anomaly. ANSWER DOWNLOAD EXAMIANS APP
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