Database Redesign Which of the following SQL statements are helpful in database redesign? EXISTS/NOT EXISTS expressions only None of these Both of the above are helpful Correlated subqueries only EXISTS/NOT EXISTS expressions only None of these Both of the above are helpful Correlated subqueries only ANSWER DOWNLOAD EXAMIANS APP
Database Redesign What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is not terribly difficult if the: database is well-designed. database has no data. database is structured. database is relatively small. database is well-designed. database has no data. database is structured. database is relatively small. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which SQL-92 standard SQL command can be used to change a table name? RENAME TABLE ALTER TABLE CHANGE TABLE None of these RENAME TABLE ALTER TABLE CHANGE 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: None of these data modeling. database design. reverse engineering. None of these data modeling. database design. reverse engineering. ANSWER DOWNLOAD EXAMIANS APP
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