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The cron in Version 7 Unix was a system service (later called a daemon) invoked from /etc/rc when the operating system entered multi-user mode. [10] Its algorithm was straightforward: Read /usr/lib/crontab [11] Determine if any commands must run at the current date and time, and if so, run them as the superuser, root. Sleep for one minute
On April 5, 2018, the MySQL Workbench Team announced [28] the first public release of version 8.0.11 as a Release Candidate (RC) together with MySQL Community Server 8.0.11. The first General Availability (GA) release appeared on July 27, 2018 [ 29 ] again together with the server following the new policy for aligning version numbers across ...
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MySQL (/ ˌ m aɪ ˌ ɛ s ˌ k juː ˈ ɛ l /) [6] is an open-source relational database management system (RDBMS). [6] [7] Its name is a combination of "My", the name of co-founder Michael Widenius's daughter My, [1] and "SQL", the acronym for Structured Query Language.
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Recursive CTEs can be used to traverse relations (as graphs or trees) although the syntax is much more involved because there are no automatic pseudo-columns created (like LEVEL below); if these are desired, they have to be created in the code. See MSDN documentation [2] or IBM documentation [13] [14] for tutorial examples.
Open Workbench claims to be open source. However, the source code available through SourceForge does not include "scheduling algorithms [which] are currently not open sourced and will be maintained by CA Technologies (Computer Associates)". [5] Furthermore, the available source code is old, dating back to version 1.1.4 of 2005.
The fraction 13/5 = 2.6 and the floor function have that effect; the denominator of 5 sets a period of 5 months. The overall function, , normalizes the result to reside in the range of 0 to 6, which yields the index of the correct day of the week for the date being analyzed.