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Why do I need Transaction in Hibernate for read-only operations?
...nsactions can be optimized by DBs, but this of course is DB specific. E.g. MySQL added support for this only in InnoDB starting from 5.6.4 version.
If you're not using JDBC directly, but rather an ORM, that might be problematic. For instance Hibernate community says that working outside of transacti...
What's the difference between an inverted index and a plain old index?
... of procedures which have been done in order to speed up application (e.g. MySQL or other RDBMS Consult MySQL the docs). Indexing can also be related to caching etc.
Inverted index creates file with structure that is primarily intender for (fulltext) searching.
Inverted index consists of two main...
What is the difference between loose coupling and tight coupling in the object oriented paradigm?
... output in a CSV file rather than JSON etc., or if you want to switch from MySQL to PostGreSQL you should be able to make those changes extremely easily in your code, without having to rewrite the entire class etc. In other words, you do not want to tightly couple your application with a specific da...
Why is it bad style to `rescue Exception => e` in Ruby?
... You can also ADAPTER_ERRORS = [::ActiveRecord::StatementInvalid, PGError, Mysql::Error, Mysql2::Error, ::ActiveRecord::JDBCError, SQLite3::Exception] and then rescue *ADAPTER_ERRORS => e
– j_mcnally
Feb 27 '14 at 2:19
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How to read a .xlsx file using the pandas Library in iPython?
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Hmmm if you said mysql - I'd know the answer, postgres may just work similarly... not 100% though. (Would be a good question.)
– Andy Hayden
Jun 3 '13 at 21:54
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How should I choose an authentication library for CodeIgniter? [closed]
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All these libraries use mysql.. however I use MongoDb which is a noSql database. Is there a library which works with MoongoDB? I tried converting one of the libraries above to insert into MongoDB instead of MySql but it is getting too complex and wo...
MongoDB with redis
...od results. A company well-known for running MongoDB and Redis (along with MySQL and Sphinx) is Craiglist. See this presentation from Jeremy Zawodny.
MongoDB is interesting for persistent, document oriented, data indexed in various ways. Redis is more interesting for volatile data, or latency sensi...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...spectively.
As you use the 2a format, you’ll need 60 bytes. And thus for MySQL I’ll recommend to use the CHAR(60) BINARYor BINARY(60) (see The _bin and binary Collations for information about the difference).
CHAR is not binary safe and equality does not depend solely on the byte value but on th...
How should you build your database from source control?
.../setup_db.sql
proj/sql/dummy_data.sql
proj/sql/mssql_specific.sql
proj/sql/mysql_specific.sql
And then I abstract out all my SQL queries so that I can build the entire project for MySQL, Oracle, MSSQL or anything else.
Build and test automation uses these build-scripts as they are as important as...
Is there already a Google+ API? [closed]
... code to read a public profile, post, and relationship data, cache it in a MySQL database, and serve the data to a front-end as a JSON or JSONP service.
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