Database Redesign What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The EXISTS keyword will be true if: neither of these two conditions is met. any row in the subquery meets the condition only. all rows in the subquery fail the condition only. both of these two conditions are met. neither of these two conditions is met. any row in the subquery meets the condition only. all rows in the subquery fail the condition only. both of these two conditions are met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A correlated subquery is processed as a nested subquery. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Typically, there should be at least two different copies of the database schema used in the redesign process. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A regular subquery is processed from the bottom up. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: None of these dependency graph. data model. graphical display. None of these dependency graph. data model. graphical display. ANSWER DOWNLOAD EXAMIANS APP
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