I am developing 开发者_JAVA技巧a new version of an application that was using an ms-access database because it was becoming too slow.
My fellow programmer has a strange requirement from his team leader; he insisted on creating varchar columns with a length of 16*2n.
I am using Entity Framework Code First method to create my database table. The following code creates a DATETIME column in the database, but I want to create a DATE column.
What is difference between longblob and longtext in mysql? What should I use to s开发者_如何转开发ave a long topic ?BLOBs are for Binary Large Objects. If you\'re storing binary data in your DB, then
What is the correct column type for holding ZipCode values in PostgreSQL da开发者_如何学Pythontabase?I strongly disagree with the advice presented here.
I currently have a few tables in my MySQL database where I declare the id field to be of type SMALLINT(6) (is this correct as SMALLINT only goes to 65535 [length of 5]). I have read here under integer
I\'m using MySQL version 5.1.49-1ubuntu8.1. It allows me to define columns of two different data types: BOOL and BOOLEAN. What are the differe开发者_如何学Gonces between the two types?They are both sy
I\'m a little bit开发者_如何学JAVA confused on datatypes length in MySql; I read the reference manual at http://dev.mysql.com/doc/refman/5.0/en/data-types.html and I know that when I write \"INT(M)\".
Microsoft announced that: \"ntext, text, and image data types will be removed in a future version of Microsoft SQL Server.\" And advises to use nvarchar(max), varchar(max), and varbinary(max) instead.
How can I map Oracle column types TIMESTAMP WITH TIME ZONE or TIMESTAMP WITH LOCAL TIME ZO开发者_开发百科NE to a Java data type using Hibernate 3.3.2GA?Can I map each of these to a Date or Calendar da
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