Thinking About Persistence Layers

[ronaldo_aparecido]

Hi community

When abap keyword says thas AS ABAP can access a persistence layer that is independent of the operating system and database system .Is it about propertie of saving se38 programs to be opened later? Or did i get it wrong?

I undestand persistence is about storing the state as data in computer data storage.

[Sandra_Rossi]

Where is it said so? (where, exactly, to have the context)

[ronaldo_aparecido]

Hi Sandra Rossi

I was reading the abap keyword here: abap key word

And I have no problem. I want to understand more then i create this "question" to discuss it with my fellow technicians.

Thanks for reply

[Jelena_Perfiljeva]

Please use Comments to reply to someone, and use Answer when offering a solution for the original question.

To be honest, I wouldn't give much thought to this piece of information. It seems to be more confusing than helpful purely from the ABAP development perspective. Honestly, I can barely understand more than half written in SAP Help. That's why companies like SAP Press and Espresso Tutorials exist. 🙂

[ronaldo_aparecido]

thanks i will focus on books

[matt]

It just means that ABAP and Java appservers can talk to each other, and that there is a layer that allows data to be stored and retrieved, (i.e. OpenSQL in ABAP, something similar in Java, I guess), that is not dependent on Operating System, nor on the actual database.

[Sandra_Rossi]

Thanks, so the ABAP glossary entry for "Application Server" says :

"Both variants [Ed. Application Server ABAP and Application Server Java] can access a persistence layer that is independent of the operating system and database system and are associated by being able to call one another."