Managing Databases with Oracle Which of the following is not true about modifying table columns? You cannot increase or decrease the number of decimal places. You can add a column at any time as long as it is a NULL column. You can increase the number of characters in character columns or the number of digits in numeric columns You can drop a column at any time. You cannot increase or decrease the number of decimal places. You can add a column at any time as long as it is a NULL column. You can increase the number of characters in character columns or the number of digits in numeric columns You can drop a column at any time. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Indexes are created to enforce uniqueness on columns and to enable fast retrieval by column values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle does NOT support a CASCADE UPDATE constraint. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle directly supports the definition of surrogate keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true about indexes? Indexes are created with the ALTER TABLE command. Indexes are created to enable fast retrieval by column values. Indexes are created to enforce uniqueness on columns. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. Indexes are created with the ALTER TABLE command. Indexes are created to enable fast retrieval by column values. Indexes are created to enforce uniqueness on columns. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle You can use the DROP statement to remove structures from the database. True False True False ANSWER DOWNLOAD EXAMIANS APP
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