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How can you represent inheritance in a database?
...to tackle inheritance is to create a new table for each subtype, repeating all the common attributes in each table. For example:
--// Table: policies_motor
+------+---------------------+----------------+
| id | date_issued | vehicle_reg_no |
+------+---------------------+----------------+
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`find -name` pattern that matches multiple patterns
I was trying to get a list of all python and html files in a directory with the command find Documents -name "*.{py,html}" .
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How to export and import a .sql file from command line with options? [duplicate]
...some issues/tips:
Error: ......not exist when using LOCK TABLES
# --lock-all-tables，-x , this parameter is to keep data consistency because some transaction may still be working like schedule.
# also you need check and confirm: grant all privileges on *.* to root@"%" identified by "Passwd";
ER...
How to run Conda?
I installed Anaconda and can run Python, so I assume that I installed it correctly. Following this introductory documentation , I am trying to install Python v3.3, so I am copying and pasting the following line into my console:
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MySQL InnoDB not releasing disk space after deleting data rows from table
... 2M data rows. When I deleted data rows from the table, it did not release allocated disk space. Nor did the size of the ibdata1 file reduce after running the optimize table command.
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Cannot ping AWS EC2 instance
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Thank you, I like this. I just want to allow the ping, not all.
– Chu-Siang Lai
Nov 25 '16 at 11:29
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How can I view MSIL / CIL generated by C# compiler? Why is it called assembly?
...e (Native code). High level code is converted into intermediate language (called MSIL aka CIL). But when I compile, I get an exe/Dll file.
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gcc warning" 'will be initialized after'
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The order of initialization doesn’t matter. All fields are initialized in the order of their definition in their class/struct. But if the order in initialization list is different gcc/g++ generate this warning. Only change the initialization order to avoid this warnin...
Click event doesn't work on dynamically generated elements [duplicate]
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The click() binding you're using is called a "direct" binding which will only attach the handler to elements that already exist. It won't get bound to elements created in the future. To do that, you'll have to create a "delegated" binding by using on().
Del...
How can I push a specific commit to a remote, and not previous commits?
... commits, not to be confused with the top, first, or tip commit, which are all ambiguous descriptions in my opinion. The commit needs to the oldest of your commits, i.e. the furthest from your most recent commit. If it's not the oldest commit then all commits from your oldest, local, non-pushed SHA ...