The unsigned char data type, and byte data type will yield incorrect results and act as though they are signed types i. e. type char.
无符号字符数据类型和二进制数据类型将产生错误的计算结果，会当成有符号的数据类型进行计算。
The CHAR data type provides a performance boost because the database knows exactly how big every CHAR column will be and can make certain performance optimizations when reading or writing the data.
CHAR数据类型有助于性能提高，因为数据库确切地知道每个char列有多大，所以在读写数据时就可以执行某种性能优化。
There is a code page conversion to the SQL world if the value is serialized into a CHAR, VARCHAR, or CLOB type that is not FOR BIT DATA.
如果值被串行化为不是FOR BIT DATA 的CHAR、VARCHAR或CLOB类型，那么会有一个到SQL世界的代码页转换。
For example, the framework might assume that any CHAR(1) field should be mapped to a Boolean data type.
例如，框架可能假设任何CHAR(1)字段都应该映射到一个Boolean数据类型。
We did it for silly purposes just to see how big each data type was, but on most systems the size of a char is what?
只是为了很傻的目的，来看看每个数据类型多大，但是在大多数的系统中char的大小是多少呢？
Derby provides two simple techniques for storing character data: the char type and the VARCHAR type, which are detailed in Table 3.
Derby提供了保存字符数据的两个简单技术：char类型和varchar类型，详情如表3所示。
The type char is used to represent character data and is covered in Chapter 8.
char类型被用来表示字符数据，在第8章会讲到。
The type char is used to represent character data and is covered in Chapter 8.
char类型被用来表示字符数据，在第8章会讲到。
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