Because of strong data isolation and compliance requirements of the tenant, user data may reside in a dedicated database in an on demand environment for each of the tenants.
由于承租者高度的数据隔离和遵从性需求，用户数据可能位于按需环境中的专用数据库(用于每个承租者)中。
The logical model of the database is simply a representation of all the data requirements of the user, put into a normalized form.
数据库的逻辑模型仅仅是对用户的所有数据需求的一种表示，它将这些需求变成一种范式。
Otherwise, you'll simply get an error. When all the requirements are met, make sure that the user name does not already exist in the database.
否则，只能是一个错误，当所有需求都满足之后，确保用户名不和数据库中现有的用户名重复，如果是重复了，也是返回一个错误。
To convert your existing database, the product owner should go over the requirements database and identify the high-level user stories associated with each of them.
要改造现有的数据库，产品所有者应当仔细研究需求数据库并确定一些彼此相关的高级用户描述。
To support high-throughput and high-user-concurrency requirements in an application or subsystem, you need high database concurrency.
为了在应用程序或子系统中支持高吞吐量和高用户并发性，您需要高数据库并发性。
PureQuery USES a set of bean conventions and requirements to map database query results directly to the user-defined bean class.
pureQuery使用一组bean约定和需求将数据库查询结果直接映射到用户定义的bean类。
The traditional database is not active driven by the user or procedure, it operates transaction only when a user or application procedure makes explicit requirements.
传统的数据库是被动的，由用户或程序驱动，只有当用户或应用程序提出明确要求时才执行事务操作。
The traditional database is not active driven by the user or procedure, it operates transaction only when a user or application procedure makes explicit requirements.
传统的数据库是被动的，由用户或程序驱动，只有当用户或应用程序提出明确要求时才执行事务操作。
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