客户信息可能存储在客户主数据管理系统或多个存储库中，而信用卡事务则可能存储在另一个数据源中。

Customer information might be stored in a customer master data management system, or multiple repositories, and credit card transactions might be stored in another data source.

youdao

当然他也可以是其他的系统,(遗留系统,大型主机),可以是服务(B2B服务,信用卡局服务)或者是像LDAP这样的数据库等.

A data source can also be another system (legacy/mainframe), service (B2B service or credit card bureau), or some kind of repository (LDAP).

youdao

用于永久或临时存储信用卡数据的数据库系统是什么？

Which database systems are used for either permanent or temporary storage of credit card data.

youdao