有人在Android上用UniDAC 6.2.7连接MySQL吗？有没有遇到UniQuery和UniTable打开极慢？

1) make your project thinking about the next possibilities of database change

2) In the database use names of tables and fields that can be understood by any database. use maximum size names as allowed by all database, usually 31 ASCII characters. In the same way, for the name of the columns.

3) In the UniDAC / FireDAC project use the common components: dbConnection, dbWaitCursor, dbQuery, dbDataSource, etc ... more are proper components for each Framework as FireDAC / UniDAC xxxPhysxxxDriversxxx

4) If possible, use MACRO replacement in the confections of the connections or querys. This way, your project will be ready for any database change.

5) Be careful not to overcomplicate your project with excess macro overwriting table names or fields.

6) If your project also serves for MOBILE use DIRECTIVES for each platform, each platform must have its definitions and forms in different units.
Use the directives through, for example:
{IFDEF ANDROID} code {ENDIF}
see {INCLUDE xxxx.pas} or {i xxxx.pas} or any text file with Delphi code.

7) To embed files next to your project, look for using OPTION, DEPLOIMENT options so that the necessary ones for your application are sent to the appropriate installation locations. See the RAD STUDIO help manual (or the Embarcadero online manual) for each platform's standard variables to install additional files from your application, such as the database in MOBILE / Windows / Linyx / macOS environments

This makes maintenance easy, if necessary.

对于使用RAD Studio（Delphi / CBuilder）+ UNIDAC或FIREDAC的数据库项目的良好操作：

1）让你的项目考虑数据库变化的下一个可能性

2）在数据库中使用任何数据库都可以理解的表和字段的名称。使用所有数据库允许的最大大小名称，通常为31个ASCII字符。以同样的方式，为列的名称。

3）在UniDAC / FireDAC项目中，使用通用组件：dbConnection，dbWaitCursor，dbQuery，dbDataSource等...更多适用于每个框架的组件，如FireDAC / UniDAC xxxPhysxxxDriversxxx

4）如果可能的话，在连接或查询的甜食中使用MACRO替换。这样，您的项目将准备好进行任何数据库更改。

5）注意不要使用多余的宏覆盖表名称或字段来过度复杂项目。

6）如果您的项目也为每个平台的MOBILE使用DIRECTIVES服务，则每个平台必须以不同的单位定义和表格。

通过使用指令，例如：

{IFDEF ANDROID}代码{ENDIF}
使用Delphi代码查看{INCLUDE xxxx.pas}或{i xxxx.pas}或任何文本文件。

7）要将文件嵌入到项目旁边，请查找使用OPTION，DEPLOIMENT选项，以便为您的应用程序发送必要的文件到相应的安装位置。有关每个平台的标准变量，请参阅RAD STUDIO帮助手册（或Embarcadero在线手册），以从您的应用程序安装其他文件，例如MOBILE / Windows / Linyx / macOS环境中的数据库

如有必要，这使维护变得容易。