The sequential index, which suffixes the file name, is generated by the binding and stored in the file specified by “Sequence file”.

作为文件名后缀的顺序索引由绑定生成，且存储在 “Sequence file” 指定的文件中。

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Access plan directives that force the optimizer to use the designated access method for data retrieval, either sequential scan or index scan.

访问计划指示，强制优化器使用指定的访问方法进行数据检索，要么是连续扫描，要么是索引扫描。

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If the inner table does not have an index, the database server will compare the cost of building an index on the table to the cost of a sequential scan, and will choose the one with the least cost.

如果内部表没有索引，那么数据库服务器就会将在表上构建索引的成本与连续扫描的成本进行比较，然后选择成本最低的那一种方法。

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