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