大约有 1,959 项符合查询结果(耗时:0.0137秒) [XML]

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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...
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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?

... 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]

... 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...
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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...
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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...
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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...
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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. share | improve this answer | ...
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CREATE TABLE IF NOT EXISTS equivalent in SQL Server [duplicate]

CREATE TABLE IF NOT EXISTS works on mysql but fails with SQL Server 2008 R2. What is the equivalent syntax? 1 Answer ...
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Difference between datetime and timestamp in sqlserver? [duplicate]

... by database system?im sorry im new to server side programming. i am using mysql sa database and now i am using xampp as my local host. – Brownman Revival May 19 '15 at 6:32 ...