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In computing, exit is a command used in many operating system command-line shells and scripting languages.. The command causes the shell or program to terminate.If performed within an interactive command shell, the user is logged out of their current session, and/or user's current console or terminal connection is disconnected.
COMMIT and ROLLBACK terminate the current transaction and release data locks. In the absence of a START TRANSACTION or similar statement, the semantics of SQL are implementation-dependent. The following example shows a classic transfer of funds transaction, where money is removed from one account and added to another.
For example, a watchdog timer can terminate a process that remains idle beyond a specified time limit. [3] [4] Database Transactions: In database management, aborting (often termed ‘rolling back’) a transaction is crucial for maintaining data integrity. If a transaction cannot be completed successfully, aborting it returns the database to ...
A command-line interface is a means of interacting with a computer program where the user issues commands to the program by typing in successive lines of text (command lines). MySQL ships with many command line tools, from which the main interface is the mysql client. [123] [124]
Data Control Language is one of the logical group in SQL Commands. SQL [ 1 ] is the standard language for relational database management systems. SQL statements are used to perform tasks such as insert data to a database, delete or update data in a database, or retrieve data from a database.
The disown command can be used to remove jobs from the job table, so that when the session ends the child process groups are not sent SIGHUP, nor does the shell wait for them to terminate. They thus become orphan processes , and may be terminated by the operating system, though more often this is used so the processes are adopted by init (the ...
An American Airlines flight departing New York's LaGuardia Airport on Thursday evening had to divert to nearby John F. Kennedy International shortly after takeoff after a reported bird strike ...
Deleting all rows from a table can be very time-consuming. Some DBMS [clarification needed] offer a TRUNCATE TABLE command that works a lot quicker, as it only alters metadata and typically does not spend time enforcing constraints or firing triggers. DELETE only deletes the rows. For deleting a table entirely the DROP command can be used.