可更新的

• Switch to renewable sources of energy
  换用可更新的资源。
• Methods will fail because the columns are updateable , but the
  方法都将失败，因为这些列是可更新的，但是
• An exception is thrown if the row is not marked as updatable
  如果未将行标记为可更新的，则会引发异常。
• At the time of this writing , derby does not support updateable cursors
  在撰写本文时， derby还不支持可更新的游标。
• You can choose whether the cursor is read - only or updateable using the options
  选项来选择光标是只读的还是可更新的。
• In the following cases , sql server cannot create an updatable cursor
  在下列情况下， sql server无法创建可更新的游标。
• Method is called . an exception is thrown if the row is not marked as updatable
  如果未将行标记为可更新的，则会引发异常。
• Provides a scrollable , updateable cursor that is faster than a
  提供比dataset更快速、比datareader更灵活、可滚动、可更新的游标。
• Is set to false , the columns will be marked as updateable in the schema table
  被设置为false ） ，这些列在架构表中也被标记为可更新的。
• A primary key must be defined on the updatable recordset returned by the select statement
  必须为select语句返回的可更新的记录集定义一个主键。