Managing Multiuser Databases Locks placed by command are called ________ . exclusive locks implicit locks explicit locks shared locks exclusive locks implicit locks explicit locks shared locks ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following occurs when one transaction reads a changed record that has not been committed to the database? Consistent read Nonrepeatable read Phantom read Dirty read Consistent read Nonrepeatable read Phantom read Dirty read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Database administration refers to a function that applies to the entire organization. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The size of a lock is referred to as lock sizing. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following locks the item from change but not from read? Shared lock Explicit lock Exclusive lock Implicit lock Shared lock Explicit lock Exclusive lock Implicit lock ANSWER DOWNLOAD EXAMIANS APP
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