Managing Databases with Oracle An Oracle System Change Number (SCN): is a value that is incremented whenever a dirty read occurs. is incremented whenever a deadlock occurs. is a value that keeps track of explicit locks. is a value that is incremented whenever database changes are made. is a value that is incremented whenever a dirty read occurs. is incremented whenever a deadlock occurs. is a value that keeps track of explicit locks. is a value that is incremented whenever database changes are made. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true about modifying table 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. 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 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
Managing Databases with Oracle Which statement about sequences is not true? Sequences guarantee valid surrogate key values. NextVal and CurrVal are both sequence methods. Sequences are most often used to provide values for surrogate keys. A sequence is an object that generates a sequential series of unique numbers. Sequences guarantee valid surrogate key values. NextVal and CurrVal are both sequence methods. Sequences are most often used to provide values for surrogate keys. A sequence is an object that generates a sequential series of unique numbers. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle commands, column names, table names, view names and all other database elements are case sensitive. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle What Oracle backup and recover file contains user and system data? OnLine ReDo file Datafile Control file Offline ReDo file OnLine ReDo file Datafile Control file Offline ReDo file ANSWER DOWNLOAD EXAMIANS APP
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