Database Redesign Changing cardinalities in a database is: a common database design task. 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 rare database design task, but does occur. a common database design task. 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 rare database design task, but does occur. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The EXISTS keyword will be true if: 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. neither of these two conditions is met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign What SQL command can be used to add columns to a table? ALTER TABLE TableName ADD COLUMN ColumnName ALTER TABLE TableName ADD ColumnName MODIFY TABLE TableName ADD ColumnName MODIFY TABLE TableName ADD COLUMN ColumnName ALTER TABLE TableName ADD COLUMN ColumnName ALTER TABLE TableName ADD ColumnName MODIFY TABLE TableName ADD ColumnName MODIFY TABLE TableName ADD COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign To drop a column that is used as a foreign key, first: 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. drop the table containing the foreign key. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A regular subquery can be processed: from the top down. from the bottom up. None of these by nesting. from the top down. from the bottom up. None of these by nesting. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How can you find rows that do not match some specified condition? NOT EXISTS None of these EXISTS Double use of NOT EXISTS NOT EXISTS None of these EXISTS Double use of NOT EXISTS ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS