ocp-457

QUESTION NO: 457

Sales details are being stored on a daily basis in the SALES_2007 table. A large amount of data is added to

the table daily. To save disk space, you issued the following command:

ALTER TABLE sales_2007 COMPRESS FOR ALL OPERATIONS; What would be the outcome of this

command?

A. It produces an error because data already exists in the table.

B. It produces an error because compression can be enabled at table creation only.

C. It compresses all data added or modified henceforth but the existing data in the

table is not compressed immediately. her “here”

D. It immediately compresses all existing data as well as new data, resulting from either fresh additions or

modifications to existing data.

Answer: C

在SALES_2007表，销售详细信息被存储到每日基础。大量的数据被添加到每日表中。为了节省磁盘空间，你发出以下命令：

修改表sales_2007压缩所有操作，此命令的结果会是什么？

C.它压缩所有从今以后新增或修改的数据，但现有的表中的数据不会立

即压缩。