大约有 43,000 项符合查询结果(耗时:0.0489秒) [XML]

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How to use Elasticsearch with MongoDB?

...ng bumped up when you update. echo "mongodb-10gen hold" | sudo dpkg --set-selections Start the MongoDB service. sudo service mongodb start Your database files default to /var/lib/mongo and your log files to /var/log/mongo. Create a database through the mongo shell and push some dummy data int...
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Biggest advantage to using ASP.Net MVC vs web forms

...technology - it might make development for a particular application easier selecting one technology versus the other and vice versa. ASP.NET Web Forms: Development supports state • Gives the illusion that a web application is aware of what the user has been doing, similar to Windows applicati...
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Is there ever a time where using a database 1:1 relationship makes sense?

...re is a larger set of data that needs to be collected, if and only if they select to have health coverage. I would keep the demographic data regarding health coverage in a different table to both give easier security partitioning and to avoid hauling that data around in queries unrelated to insuranc...
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Alternative to google finance api [closed]

...ery Language)** For example: http://developer.yahoo.com/yql/console/?q=select%20*%20from%20yahoo.finance .quotes%20where%20symbol%20in%20(%22YHOO%22%2C%22AAPL%22%2C%22GOOG%22%2C%22 MSFT%22)%0A%09%09&env=http%3A%2F%2Fdatatables.org%2Falltables.env 2. Use the webservice For example, to get ...
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What is the difference between Digest and Basic Authentication?

... Although the selected answer is closer to the question, I like this answer since it gives pros and cons for us uninitiated ones. – coder0h1t Jul 13 '17 at 14:45 ...
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Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie

... If the computer is restarted and "Reopen windows when logging back in" is selected, the reopened windows may not see the variables (Perhaps they are opened before the agent is run). Also, if you log in via ssh, the variables will not be set (so you'll need to set them in ~/.bash_profile). Finally, ...
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How do I replace NA values with zeros in an R dataframe?

... mutate(myCol1 = if_else(is.na(myCol1), 0, myCol1)) Note: This works per selected column, if we need to do this for all column, see @reidjax's answer using mutate_each. share | improve this answer...
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Spring @Transactional - isolation, propagation

...ion. I think if you understand the dirty reads concept you will be able to select a good option. Example of when a dirty read can occur: thread 1 thread 2 | | write(x) | | | | read(x) | | rollback | v v...
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What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA

...ata Gateway is used mainly for a single table or view. It contains all the selects, inserts, updates, and deletes. So Customer is a table or a view in your case. So, one instance of a table data gateway object handles all the rows in the table. Usually this is related to one object per database tabl...
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In which case do you use the JPA @JoinTable annotation?

... UPDATE There aren't duplicates entries in my database, the hibernate is selecting with the left outer join and I dont know why.. – MaikoID Dec 12 '12 at 20:49 2 ...