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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed. Repeatable read Read uncommitted Serializable Read committed Repeatable read Read uncommitted Serializable Read committed ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following locks the item from change but not from read? Implicit lock Exclusive lock Explicit lock Shared lock Implicit lock Exclusive lock Explicit lock Shared lock ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases The size of the lock is referred to as the lock granularity. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Locks placed by the DBMS are explicit locks. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Locks placed by command are called ________ . shared locks exclusive locks explicit locks implicit locks shared locks exclusive locks explicit locks implicit locks ANSWER DOWNLOAD EXAMIANS APP
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