What type of information is recorded on the database transaction log?

Question

The transaction log contains enough information to undo all changes made to the data file as part of any individual transaction. The log records the start of a transaction, all the changes considered to be a part of it, and then the final commit or rollback of the transaction. 11 нояб. 2004 г.

What does a transaction log record?

A transaction log is used to record the fact that a transaction is set to occur as well as the information needed by the database server to recover the data back to a consistent state in event of a sever failure while it is writing information to disk.

What is transaction log in DBMS?

A transaction log is a file – integral part of every SQL Server database. It contains log records produced during the logging process in a SQL Server database. The transaction log is the most important component of a SQL Server database when it comes to the disaster recovery – however, it must be uncorrupted.

What are database logs used for?

All databases have logs associated with them. These logs keep records of database changes. If a database needs to be restored to a point beyond the last full, offline backup, logs are required to roll the data forward to the point of failure.

What type of file is a transaction log file?

A SQL Server transaction log file is an integral part of every SQL Server database. Along with the data file, which has an MDF extension, the transaction log file with a LDF extension, makes a SQL Server database. A SQL Server database can have more than one data file. These additional data files have an NDF extension.

Expert · Answer