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 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 can drop a column at any time. You cannot increase or decrease the number of decimal places. 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 can drop a column at any time. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle You can check on the status of tables with the DESCRIBE or DESC command. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which statement about sequences is not true? Sequences are most often used to provide values for surrogate keys. Sequences guarantee valid surrogate key values. A sequence is an object that generates a sequential series of unique numbers. NextVal and CurrVal are both sequence methods. Sequences are most often used to provide values for surrogate keys. Sequences guarantee valid surrogate key values. A sequence is an object that generates a sequential series of unique numbers. NextVal and CurrVal are both sequence methods. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle To see the contents of the SQL*Plus buffer, type: CONTENTS LIST BUFFER CURRENT CONTENTS LIST BUFFER CURRENT ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle The left-leaning slash tells Oracle to execute whatever statement is in the buffer. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Indexes are created to enforce uniqueness on columns and to enable fast retrieval by column values. True False True False ANSWER DOWNLOAD EXAMIANS APP
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