Managing Multiuser Databases A transaction for which all committed changes are permanent is called: durable. atomic. isolated. consistent. durable. atomic. isolated. consistent. 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? Dirty read Consistent read Phantom read Nonrepeatable read Dirty read Consistent read Phantom read Nonrepeatable read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur? Read committed Serializable Read uncommitted Repeatable read Read committed Serializable Read uncommitted Repeatable read ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following locks the item from access of any type? Implicit lock Explicit lock Exclusive lock Shared lock Implicit lock Explicit lock Exclusive lock Shared lock 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Dirty read, nonrepeatable, and phantom reads are not possible in this instance. Serializable Read uncommitted Read committed Repeatable read Serializable Read uncommitted Read committed Repeatable read ANSWER DOWNLOAD EXAMIANS APP
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