数据完整性

Integrity constraints are defined for tables and are stored in the data dictionary.

完整性约束是针对数据表定义的，并存储于数据字典中。

It's very important for people to keep the data's Integrity and Usability and Restoration.

如何保持数据的完整性、数据的可用性和可恢复性，越来越受到人们的重视。

With regard to the former request to establish data consistency and integrity of strong, good for data security.

对于前者要求建立起数据─致性和完整性强、数据安全性好的库。

The database system in the design of a strong data consistency and integrity, data security is good and so on.

该系统在数据库的设计上有数据一致性和完整性强、数据安全性好等特点。

The request for the establishment of strong data consistency and integrity, good for the security of the data.

对于前者要求建立起数据一致性和完整性强、数据安全性好的库。

For the former requirement to establish data consistency and integrity, and data security of a good library.

对于前者要求建立起数据一致性和完整性强、数据安全性好的库。

The former calls for the establishment of data consistency and integrity, and data security database.

对于前者要求建立数据一致性和完整性强，数据安全性好的数据库。

For the former calls for the establishment of data consistency and integrity, and good data security database.

对于前者要求建立数据一致性和完整性强，数据安全性好的数据库。

For the former requirement to establish data consistency and integrity, and data security a good library.

对于前者要求建立起数据一致性和完整性强、数据安全性好的库。

For the former requirement to establish data consistency and integrity, and good data security database.

对于前者要求建立起数据一致性和完整性强、数据安全性好的库。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。