数据类型

For example, the following statement is correct: System.out.println(x = 1); which is equivalent to x = 1; System.out.println; The following statement is also correct: i = j = k = 1; which is equivalent to k = 1; j = k; i = j; In an assignment statement, the data type of the variable on the left must be compatible with the data type of the value on the right.

例如，以下声明是正确的： 55 System.out.println （十= 1 ）；这相当于为x = 1 ； 55 System.out.println ；以下声明也是正确的：= j =当K = 1 ；这相当于当K = 1 ； j =钾；=焦耳；在转让的声明中，数据类型的变量在左边则必须与数据类型的价值，对正确的。

The type of data that an attribute can contain is determined by its data type.

的数据的属性可以包含的类型取决于其数据类型。

So the relations of homomorphism are key ideas in construction of categorical data types, however there are some functions that are not homomorphism in data types.

因此同态的关系是构造范畴数据类型关键，但是，在数据类型中有些操作并不是同态操作。

The datatype of the default literal or expression must match or be convertible to the column datatype.

默认值或默认表达式的数据类型应与相应列的数据类型相同，或能够进行数据转换。

The data can be any of the scalar data types, however, every element of a matrix is the same data type.

数据元素能够是任何数值类型，当然，每个元素必须是相同的数据类型。

However for the data in tuple space, the type is not accentuated, but it does not mean that parameter of data type is not needed during storing.

而 tuple space 中的数据来看，它并没有强调存储时的数据类型，但是并不代表他的存储过程中并不需要数据类型的参数。

Image data type: In an Access project, a variable-length data type that can hold a maximum of 2^31 - 1 (2,147,483,647) bytes of binary data.

image 数据类型：在 Access 项目中，一种长度可变的数据类型，最多可存储 2^31 -1 (2，147，483，647)字节的二进制数据。

In general, there are three kinds of data source types, i.e., demographic data, in-dividual behavioral data and the psychographic or attitudinal data.

一般来说，数据挖掘算法中涉及数据可以归为三种基本的数据类型：人口统计学数据、个体行为数据、心理或态度数据。

However, it can only implement the limited operation to the spatial objects, cannot carry on transformation, index, interlink age and excavation to the spatial data, and hard integrate other information with combining map variable to set up and analysis new variable. Meanwhile, relational model in the traditional DBMS and the object- oriented modeling do not completely suit the spatial application domain. The relational model can handle topological relation well, but shows inabilities to that complicated level crossing the spatial region. Object-oriented model using software method based on the principle of the customer defined data type supports the abstract data type, especially spatial abstract data type, and possesses polymorphism and inheritances, and it can deal with topological and the layer relation, but hardly processes important continuous phenomenon in space.

GIS是当今操作有关空间信息的成熟工具和技术，但其只能对空间对象进行有限的操作，不能对空间数据进行变换、索引、链接和挖掘，难以集成其他信息来构建和分析新变量；而传统数据库管理模型中的关系模型和面向对象建模也不完全适合空间应用这一领域，关系模型能够较好地处理拓扑关系，但对表示横跨空间区域的复杂层次却无能为力；面向对象模型的软件方法支持抽象数据类型，特别是空间抽象数据类型，具有继承性和多态性，能够处理拓扑和层次关系，但难以处理空间中重要的连续性现象。

Typeless formats are available when you want to allocate the proper amount of space for the data, but do not yet know what type the data will be at the time the input layout object is created.

无类型数据当你需要给数据分配一定空间而在输入层次对象创建时不知道数据类型的时候使用。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。