Database Redesign Information systems and organizations do not just influence each other; they create each other. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: neither of these two conditions is met. any row in the subquery meets the condition. all rows in the subquery fail the condition. both of these two conditions are met. neither of these two conditions is met. any row in the subquery meets the condition. all rows in the subquery fail the condition. both of these two conditions are met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? EXISTS/NOT EXISTS expressions only Correlated subqueries only None of these Both of the above are helpful EXISTS/NOT EXISTS expressions only Correlated subqueries only None of these Both of the above are helpful 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 What SQL command can be used to delete columns from a table? ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Adding null columns to a table is straightforward. True False True False ANSWER DOWNLOAD EXAMIANS APP
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