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Data logging can be achieved with transaction groups or SQLTags History. Store-and-Forward is an engine that buffers SQL database writes to memory and caches them to a local disk when an external database connection is unavailable. Upon reconnection the data is forwarded to the server in aggregated time-efficient batches.
Old and new values as fields of a record data structure CREATE TRIGGER HistoryTable ON OriginalTable FOR INSERT , DELETE , UPDATE AS DECLARE @ Now DATETIME SET @ Now = GETDATE () /* deleting section */ UPDATE HistoryTable SET EndDate = @ Now WHERE EndDate IS NULL AND Column1 = OLD .
Relational (SQL, ODBC, JDBC) in-memory database system originally developed for use in SCADA and embedded systems, but used in a variety of other applications including financial systems. Supports data durability via snapshots and journal logging, and high availability via a hot-standby. First released in 1993; version 8.7 released in March ...
PL-SQL-Logging-Utility is an adaptation of log4j in PL/SQL. [38] Log4db2 is a logging utility for DB2 for LUW that uses SQL instructions with SQL PL code. [39] Apache Log4cxx – A logging framework for C++ patterned after Apache log4j, which uses Apache Portable Runtime for most platform-specific code and should be usable on any platform ...
MS SQL Server supports trigger for DML and DDL statement plus special trigger "logon". The scope of DDL triggers can be a database (CREATE TRIGGER name ON DATABASE ...) or the entire SQL Server instance (CREATE TRIGGER name ON ALL SERVER). When you use the entire instance, you can capture all events executed on commands that have server-level scop
Logging is particularly important in multi-user software, to have a central overview of the operation of the system. In the simplest case, messages are written to a file, called a log file . [ 1 ] Alternatively, the messages may be written to a dedicated logging system or to a log management software, where it is stored in a database or on a ...
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Physically, a log is a file listing changes to the database, stored in a stable storage format. If, after a start, the database is found in an inconsistent state or not been shut down properly, the database management system reviews the database logs for uncommitted transactions and rolls back the changes made by these transactions ...