Release 10.1A: OpenEdge Data Management:
SQL Development

> ## Progress 4GL and OpenEdge SQL interaction in an OpenEdge application

> In an OpenEdge application, data management can be controlled by the Progress 4GL programming language, the OpenEdge SQL language, or both. This section provides details on the relationship between the languages. Specifically, this section covers the following topics:

> - Comparing Progress 4GL and OpenEdge SQL

> - Understanding OpenEdge SQL database structure

> - Comparing OpenEdge SQL and Progress 4GL database objects

> - Naming objects for OpenEdge SQL and Progress 4GL databases

> - Working with data type compatibility

> - Working with SQL column widths

> - Working with triggers

> - Working with locking behavior and isolation levels

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