Distributed Relational Database Architecture › What Is DRDA? › Distributed Request

Distributed Request

For Distributed Request:

• This level of DRDA has the highest degree of transparency. Users or applications can, within a single unit of work, read and update data on multiple systems. Each SQL statement can access multiple systems.
• Multiple requests per unit of work are allowed.
• There can be more than one RDBMS per request.
• There can be several RDBMS’s per unit of work.
• There can be several unit of work managers.
• One of the unit of work managers coordinates commit/rollback.

Using a Distributed Request (DR), you will be able to access multiple RDBMS’s at the same time. The systems update the files. A DR allows the user to perceive all files across all systems as being part of one unified database.