键列

• Nonkey columns cannot be changed , except to do the following
  除进行下列更改外，不能对非键列进行其他更改：
• Such columns cannot be used as type columns , or as full - text key columns
  这些列无法用作类型列或全文键列。
• Select the columns that join the tables in the key columns and
  在“键列”和“外键列”列表中选择联接表的列。
• As the key column and include all other columns as nonkey columns
  定义为键列并包含作为非键列的所有其他列。
• The names of the columns that make up the primary keys in the parent table
  键列组成父表中的主键的列名称。
• Property for more information about how to create a primary key column
  有关如何创建主键列的更多信息，请参见
• Returns the foreign key columns defined in the catalog by a given user
  返回由给定用户在目录中定义的外键列。
• Returns the primary key columns defined in the catalog by a given user
  返回在目录中由给定用户定义的主键列。