上QQ阅读APP看书，第一时间看更新
Data integration made easy – TFDLocalSQL
As Wikipedia says:
"Data integration involves combining data residing in different sources and providing users with a unified view of them."
Traditionally, information must be stored in a single database with a single schema, but many organizations store information on multiple databases, so they need a way to retrieve data from different sources and assemble it in a unified way.
FireDAC provides a component that permits you to execute SQL statements against any dataset: TFDLocalSQL.