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 What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is not terribly difficult if the: database is structured. database is relatively small. database is well-designed. database has no data. database is structured. database is relatively small. database is well-designed. database has no data. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which SQL-92 standard SQL command can be used to change a table name? CHANGE TABLE ALTER TABLE RENAME TABLE None of these CHANGE TABLE ALTER TABLE RENAME TABLE None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The process of reading a database schema and producing a data model from that schema is known as: reverse engineering. None of these data modeling. database design. reverse engineering. None of these data modeling. database design. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS