Also any data change on a subclass involves two tables: the super class table and the subclass table.
任何子类数据的修改都涉及两张表：超类的表和子类的表。
The new program retains the option class table tennis country limit the number of total hours (36 hours) remain unchanged.
新方案仍保留乒乓球选项课国家限定总学时数(36学时)不变。
The pros include compact tables (no unnecessary nullable columns), data partitions across three subclass tables and easy association with other tables using the top super class table.
优点包括数据表比较紧凑(没有不需要的可空字段)，数据跨三个子类的表进行分区，容易使用超类的表与其他表进行关联。
The paper has analyzed the characteristics and functions of law class arrangement(the second class table) in CLC(4th), and put forward problems for discussion with the colleagues.
分析了《中图法》（4版）法律类双表列类的体系结构及存在的问题和同行商榷。
This paper analyzes some problems of "YAHOO" s Chinese classification system from several respects, such as installation of the class table, ordering and spread of classifications and so on.
论文从雅虎中国分类体系的类目设置、类目排列、类目展开等方面剖析了其分类体系存在的一些问题。
As is shown in the picture, the pupils in the class are questioning the necessity of learning basic skill such as multiplication table.
如图所示，班上的学生正在质疑学习诸如乘法表等基本技能的必要性。
However, few people realize the importance of basic skills. As is shown in the picture, the pupils in the class are questioning the necessity of learning basic skill such as multiplication table.
然而，很少有人意识到基本技能的重要性。如图所示，班上的学生正在质疑学习诸如乘法表这样的基本技能的必要性。
Mixing strategies such as "Table per Subclass" embedded in "Table per class Hierarchy" so that you can take advantages of different strategies.
采用混合策略，例如“每个类层次一张表”中嵌入“每个子类一张表”，这样可以利用不同策略的优势。
Note that there appears to be something missing: We specified the target class, but not its mapping table!
这里我们好像忘记了一点东西，我们指定了目标类，但是没有指定目标类的映射表。
The first is a compiler that accepts the application handler and creates a table class.
第一个是编译器，它接受应用处理程序，并创建一个表类。
So our file table content provider class looks like Listing 8.
因此我们的文件表内容提供程序类与清单8 类似。
It attempts to load the corresponding table class dynamically.
它尝试动态地装入相应的表类。
Internally, the class maintains a hash table of all pooled objects.
在内部，类负责维护所汇聚的全部对象的哈希表。
One, we would have each proper class in its own table, and use views to build a common table for content.
第一，我们在类自身的表中放置每个类，使用视图为内容构建通用表。
Once we have identified the class being identified and its mapping table, we need to specify the identity property of the class and its corresponding identity column in the mapping table.
我们已经标识了类和类对应的映射表，接下来我们需要标识类的标识属性和映射表中的标识列。
Since the name of the table class is derived from the name of the application handler, this is not too difficult.
因为表类的名称源于应用处理程序的名称，所以这并不太难。
This information is used behind the scenes for all the database access to this class 'table.
该信息隐式用于对该类的表的所有数据库访问中。
This annotation performs the actual mapping between the class name and the table in the underlying database.
该标注执行类名与底层数据库表之间的实际映射。
This class builds a hash table of key-value pairs at the class instantiation.
此类在类实例化时构建一个键值对哈希表。
For our second strategy (one table per class hierarchy), you'll have to define your integrity using check constraints.
对于第二个策略(每个类层次结构一个表)，您必须用检测约束定义您自己的完整性。
They can also perform impact analysis to find out all the use cases that are impacted because of a change to a class or database table.
他们也可以执行影响分析，从而找到所有会受到修改类或者数据库操作影响的用例。
A class that defines a table also has a set of members that define the table's fields.
定义表的类还有一组定义表字段的成员。
The BEGIN_EVENT_TABLE() macro takes two arguments: the class the event table is actually for and the immediate parent of that class.
BEGIN_EVENT_TABLE()宏有两个参数：事件表实际针对的类和此类的中间父类。
Joined table: (Optional) the child class is mapped to a table that has a foreign key relationship to the table to which the parent is mapped.
联合表：(可选)将子类映射到与父类映射到的表具有外键关系的表。
XPathHandler implements selected SAX events and issues the proper calls on the table class.
XPathHandler实现选中的SAX事件，并发出对表类的正确调用。
The new declarative syntax allows for the creation of a table, class, and mapping to the database in one step.
新的declarative语法允许在一步中创建表、类和数据库映射。
Active Record associates a class with a table and dynamically adds an attribute to each class for every column in the database.
ActiveRecord将类和表关联起来，并按照数据库中的每一列给每个类动态地添加一个属性。
The identity condition between the class and table names is ensured here thanks to the when keyword.
这里关键词when保证了类和表的名字的同一性。
The identity condition between the class and table names is ensured here thanks to the when keyword.
这里关键词when保证了类和表的名字的同一性。
应用推荐