表1展示了在保持信息安全时所面临的挑战，并提供了DB2和IDS中可用的解决方案。
Table 1 shows the challenges in keeping information secure and provides solutions available in DB2 and IDS.
从软件版本到谁有一个机器的“登记手续”，希望每个人都在电子数据表上保持最新的信息。
From software versions to who had a machine "checked out", everyone was supposed to keep the information in the spreadsheets up to date.
即使表的行数保持一致，使用由RUNSTATS更新的统计信息来更改数据内容可以产生不同的、也许更好的访问路径。
Even if the number of rows in a table remains consistent, changes in data contents can result in different, and hopefully better, access paths using statistics updated by RUNSTATS.
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