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NoSQL - MongoDB vs CouchDB [closed]
I am a complete noob when it comes to the NoSQL movement. I have heard lots about MongoDB and CouchDB. I know there are differences between the two. Which do you recommend learning as a first step into the NoSQL world?
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When to use “ON UPDATE CASCADE”
...ys is a good & clean alternative to enums in my opinion (at least in MySQL DB flavors). For example, consider a table colors with rows blue, purple, yellow, and a table products with a product_color column, being FK'ed to the colors table. That restricts the choices like an enum, but unlike an a...
How to add a progress bar to a shell script?
...can do things, such as the following.
$ pmonitor -c gzip
/home/dds/data/mysql-2015-04-01.sql.gz 58.06%
An earlier version of Linux and FreeBSD shell scripts appears on my blog.
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Anyone else find naming classes and methods one of the most difficult parts in programming? [closed]
...being:
context + verb + how
I use this method to name functions/methods, SQL stored procs, etc. By keeping with this syntax, it will keep your Intellisense/Code Panes much more neat. So you want EmployeeGetByID() EmployeeAdd(), EmployeeDeleteByID(). When you use a more grammatically correct syn...
Entity Framework - Include Multiple Levels of Properties
...ep down multiple layers, i managed to do a include you pointed out. In the SQL which got generated, i could see all columns are returning with different alias name as c1,c2 something like that. My question is , how i can form a nested DTO collection out of all my includes:(.. May be you can take the...
Create a GUID in Java
... you need it in those, of course, e.g. as part of creating a record in the SQL server).
– DennisK
Feb 6 '18 at 9:25
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Java Naming Convention with Acronyms [closed]
...etter acronyms. Most of them seem to be all uppercase, like 'URL', 'XML', 'SQL', and 'DOM', but there are some exceptions like 'Jar'.
Conclusion
For Java:
For 4+ letter acronyms, use mixed case. The standard library does this, and it just makes good sense.
For 3 letter acronyms, you can use all...
C#/Linq: Apply a mapping function to each element in an IEnumerable?
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To be fair it's supposed to match SQL (where the latter set of terms are common terminology)
– éclairevoyant
Aug 2 '17 at 15:14
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Join between tables in two different databases?
In MySQL, I have two different databases -- let's call them A and B .
4 Answers
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How do I convert a String object into a Hash object?
...her. Eval takes any ruby code and runs it. The danger here is analogous to SQL injection danger. Gsub is preferable.
– boulder_ruby
Jul 20 '12 at 17:37
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