SAP Data services is an ETL tool which gives a single enterprise level solution for data Integration, Transformation, Data quality, Data profiling and Text data processing from different source systems into a target DB.
A data model represents framework of what relationships are in a database. Data models are the foundation of software development. They provide a standardized method for defining and formatting database contents consistently across systems, enabling different applications to share the same data.
Professional data modeling tools provide a way to generate SQL from a modeled ER diagram although some developers often prefer writing SQL directly. Below is a look of a data model.