Schemas的连接管理

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Data Abstract引入了一种新的方式管理数据库连接: Connection Manager组件。
Connection Manager是一个存储命名连接并用于运行时的组件. 同时提供了存储连接池优化执行效率和减少服务资源占用.
TDAConnectionManager = class(...)
[..]
function GetDefaultConnectionName: string;
function NewConnection(const aConnectionName: string;
OpenConnection: boolean = TRUE;
const UserID: string = '';
const Password: string= ''): IDAConnection;
procedure Clear; override;
property PoolSize: cardinal;
property MaxPoolSize: cardinal;
property PoolTimeoutSeconds: cardinal;
property PoolBehaviour: TDAPoolBehaviour;
property WaitIntervalSeconds: cardinal;
property Connections: TDAConnectionCollection;
property DriverManager: TDADriverManager;
property PoolingEnabled: boolean read;
end;

连接数据库时：
DAConnectionManager.NewConnection(DAConnectionManager.Connections[0].Name, TRUE, eUserID.Text, ePassword.Text);