Managing Databases with Oracle Which of the following is not true about modifying table columns? You can add a column at any time as long as it is a NULL column. You cannot increase or decrease the number of decimal places. You can drop a column at any time. You can increase the number of characters in character columns or the number of digits in numeric columns You can add a column at any time as long as it is a NULL column. You cannot increase or decrease the number of decimal places. You can drop a column at any time. You can increase the number of characters in character columns or the number of digits in numeric columns ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Sequences guarantee valid surrogate key values. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle allows the ORDER BY clause in view definitions. True False True False 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 The semicolon terminates a SQL statement (and executes it). False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle What is the type of Oracle backup in which all uncommitted changes have been removed from the datafiles? Full backup Differential backup Inconsistent backup Consistent backup Full backup Differential backup Inconsistent backup Consistent backup ANSWER DOWNLOAD EXAMIANS APP
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