Database Redesign A regular subquery can be processed: from the top down. by nesting. from the bottom up. None of these from the top down. by nesting. from the bottom up. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Adding null columns to a table is straightforward. False True False True 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 Which of the following SQL statements are helpful in database redesign? None of these Correlated subqueries only Both of the above are helpful EXISTS/NOT EXISTS expressions only None of these Correlated subqueries only Both of the above are helpful EXISTS/NOT EXISTS expressions only ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: graphical display. data model. dependency graph. None of these graphical display. data model. dependency graph. None of these ANSWER DOWNLOAD EXAMIANS APP
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