Database Redesign The EXISTS keyword will be true if: all rows in the subquery fail the condition only. any row in the subquery meets the condition only. both of these two conditions are met. neither of these two conditions is met. all rows in the subquery fail the condition only. any row in the subquery meets the condition only. both of these two conditions are met. neither of these two conditions is met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Changing cardinalities in a database is: a rare database design task, but does occur. a database design task that never occurs. is impossible to do, so a new database must be constructed and the data moved into it. a common database design task. a rare database design task, but does occur. a database design task that never occurs. is impossible to do, so a new database must be constructed and the data moved into it. a common database design task. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: all rows in the subquery fail the condition. both of these two conditions are met. any row in the subquery meets the condition. neither of these two conditions is met. all rows in the subquery fail the condition. both of these two conditions are met. any row in the subquery meets the condition. neither of these two conditions is met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The data model that is produced from reverse engineering is: an internal model. None of these a logical model. a conceptual model. an internal model. None of these a logical model. a conceptual model. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign To drop a column that is used as a foreign key, first: drop the table containing the foreign key. drop the primary key. drop the foreign key constraint. All of these drop the table containing the foreign key. drop the primary key. drop the foreign key constraint. All of these ANSWER DOWNLOAD EXAMIANS APP
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