您的位置:首页 > 数据库

SQLite 数据库字段类型

2013-12-27 22:32 197 查看
都知道Android中数据保存之一就是使用了sqlLite,所以经常创建表需要涉及到数据库字段。

sqlLite中包含5中字段,根据下面的介绍对于想inte,应该会根据值自动设置长度存储。具体待学习

Each value stored in an SQLite database (or manipulated by the database engine) has one of the following storage classes:

NULL. The value is a NULL value.

INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.

REAL. The value is a floating point value, stored as an 8-byte IEEE floating point number.

TEXT. The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16LE).

BLOB. The value is a blob of data, stored exactly as it was input.

参考:

http://www.sqlite.org/datatype3.html

http://kuikui.iteye.com/blog/423490

http://developers.androidcn.com/reference/android/database/sqlite/package-summary.html
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: