Technical Overview of CDS View – SAP HANA Part IAshish Saxena
SAP HANA has introduced new paradigms to SAP ABAP application programming. Before SAP HANA, development paradigm in SAP was based on DATA-to-Code where intensive calculation was done at the application layer and database utilization was minimized. New programming paradigm in SAP HANA is Code-to-Data, where the intensive calculation is done at the database layer and less programming at application layer.
Technical Overview of CDS View – SAP HANA Part IAshish Saxena
SAP HANA has introduced new paradigms to SAP ABAP application programming. Before SAP HANA, development paradigm in SAP was based on DATA-to-Code where intensive calculation was done at the application layer and database utilization was minimized. New programming paradigm in SAP HANA is Code-to-Data, where the intensive calculation is done at the database layer and less programming at application layer.
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Beginner's Guide: Programming with ABAP on HANAAshish Saxena
The focus of this blog is to present an overview of the new programming techniques in ABAP after the introduction of HANA database. The focus will be towards providing a guideline on why and how an ABAP developer should start transitioning its code to use the new coding technique’s.
Technical Overview of CDS View - SAP HANA Part IIAshish Saxena
It is very important that a developer understands that technically, CDS is an enhancement of SQL which provides a Data Definition Language (DDL) for defining semantically rich database tables/views (CDS entities) and user-defined types in the database. Unlike the SAP HANA CDS, ABAP CDS are independent of the database system. The entities of the models defined in ABAP CDS provide enhanced access functions compared with existing database tables and views defined in ABAP Dictionary, making it possible to optimize Open SQL-based applications. And it is because of these unparalleled advantages that ABAP CDS is the most preferred form of methodology when it comes to Code to Data paradigm.
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SAP ABAP on HANA Training provided Online from USA industry expert trainers with real time project experience. Ph: 515-978-1059. Live & Video training.Duration: 60hrs
The Best SAP ABAP on HANA Online Training in USA, UK, Canada.Coy Currin
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SAP HANA ABAP course is developing an end-to-end Application from HANA via ABAP. SAP HANA ABAP online training with 24*7 dedicated server & standard material
SAP HANA is s a real-time, in-memory database that enables organizations to process “big data” in support of transactional processing, operational reporting, advanced analytics and predictive modeling. With that said, SAP HANA has the potential to be much more than a database. In fact, SAP HANA as platform can serve as an agile, flexible application development framework. This game-changing capability empowers organizations to build advanced applications directly on SAP HANA, leveraging the SAP HANA Extended Application Service (XS).
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SAP HANA converges database and application platform capabilities in-memory to transform transactions, analytics, text analysis, predictive and spatial processing so businesses can operate in real-time. Here is a short overview of some possible use architecture types for SAP HANA as a platform, dedicated to SAP solutions.
Webtrackker is an IT company in Noida and also provides training in SAP(HANA, ABAP, SD, MM, PP, FI/CO, BI, BASIS), JAVA, PHP, ANGULAR JS, HADOOP for more details call at 8802820025, 9540693544 or visit at our website www.webtrackker.com
Beginner's Guide: Programming with ABAP on HANAAshish Saxena
The focus of this blog is to present an overview of the new programming techniques in ABAP after the introduction of HANA database. The focus will be towards providing a guideline on why and how an ABAP developer should start transitioning its code to use the new coding technique’s.
Technical Overview of CDS View - SAP HANA Part IIAshish Saxena
It is very important that a developer understands that technically, CDS is an enhancement of SQL which provides a Data Definition Language (DDL) for defining semantically rich database tables/views (CDS entities) and user-defined types in the database. Unlike the SAP HANA CDS, ABAP CDS are independent of the database system. The entities of the models defined in ABAP CDS provide enhanced access functions compared with existing database tables and views defined in ABAP Dictionary, making it possible to optimize Open SQL-based applications. And it is because of these unparalleled advantages that ABAP CDS is the most preferred form of methodology when it comes to Code to Data paradigm.
SAP Abap on Hana Training Course ContentZaranTech LLC
SAP ABAP on HANA Training provided Online from USA industry expert trainers with real time project experience. Ph: 515-978-1059. Live & Video training.Duration: 60hrs
The Best SAP ABAP on HANA Online Training in USA, UK, Canada.Coy Currin
Hyderabadsys provides the best specialized SAP ABAP on HANA Online Training for various computers IT courses. We are providing online Training supported specific wants of the students particularly we are provide innovative one to at least one training all told the software’s that are having nice opportunities within the gift trend. We are provides classes space training and still as online training to subsume today’s competitive package world. Students will select either traditional track or way course or weekends classes.
SAP HANA ABAP course is developing an end-to-end Application from HANA via ABAP. SAP HANA ABAP online training with 24*7 dedicated server & standard material
SAP HANA is s a real-time, in-memory database that enables organizations to process “big data” in support of transactional processing, operational reporting, advanced analytics and predictive modeling. With that said, SAP HANA has the potential to be much more than a database. In fact, SAP HANA as platform can serve as an agile, flexible application development framework. This game-changing capability empowers organizations to build advanced applications directly on SAP HANA, leveraging the SAP HANA Extended Application Service (XS).
During this webinar, we will outline how the SAP HANA XS Engine can add value to your business through agile development methods. Additionally, we will demonstrate how SAP HANA Studio is used to develop applications that can both read and write to your SAP HANA instance. The webinar will specifically focus on how SAP HANA XS can provide personalization, page building and navigation. We will detail the benefits and best practices and demonstrate the integrated SAP HANA application layer tools.
SAP HANA converges database and application platform capabilities in-memory to transform transactions, analytics, text analysis, predictive and spatial processing so businesses can operate in real-time. Here is a short overview of some possible use architecture types for SAP HANA as a platform, dedicated to SAP solutions.
OTN tour 2015 Oracle Enterprise Manager 12c – Proof of ConceptAndrejs Vorobjovs
Why we are talking about this
How – minimal survival kit
Database provisioning:
Database provisioning
Pluggable database provisioning
Schema provisioning
Middleware provisioning:
New instance installation
Instance cloning
Integration provisioning
Restrictions
Conclusion
Q&A
Peteris Arajs
Technology Architecture Associate Manager at Accenture
More than 15 years experience in IT industry with main focus to:
- DB design, analysis, development and performance tuning
- Oracle eBusiness Suite
- Oracle Middleware
Also experienced in all stages of software development life cycle (SDLC) from business requirements and technical definitions to development, testing and production support.
Alex Nemirovskis
Technology Architecture Associate Manager at Accenture
More than 19 years experience in IT industry with main focus to:
- DB design, analysis, development and performance tuning
- DWH / ETL / BI / Analytics
- Oracle ADF
Also experienced in all stages of software development life cycle (SDLC) from business requirements and technical definitions to development, testing and production support.
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Daniel Ridder ABAP Core Data Services No Pain, No Gain
1. ABAP Core Data Services
No Pain, No Gain
Hitchhiker's Guide to ABAP CDS since NetWeaver 7.40
SAP Inside Track 2017, Frankfurt
Daniel Ridder @nielseabap
3. ABAP Core Data Services
Technical Description
• Technologically agnostic definition of
database views
• CDS borrowed heavily from SQL-Standard
• Supports functions of ANSI-SQL
• DDIC Object [DDLS] with can only be viewed
and edited with ADT
• Generates database native artefacts (DDL-
Statements) during activation
Context of Availability
• 1st introduction of CDS with NetWeaver 7.40
SP5 on AnyDB
• Parameter-Views came up with 7.40 SP8
(DBMS compatibility unknown at that time)
• General availability of CDS for AnyDB (incl.
Parameter-Views) since NetWeaver 7.50
! DO NO MIX UP ABAP WITH HANA CDS !
It’s a total different technology
5. Back to good software design
Data access via OpenSQL Business Objects
Performing with itabs Abstraction via API-Design
6. In the beginning the business object was created.
This has made a lot of people very angry and been widely regarded as a bad move.
Persistance
Business Object
Attributes
Locking
Links to other
Business Objects
Access via API
∙ BOPF
∙ SADL
∙ OpenSQL
• Don’t go back to the old days…
• 1st define your business
object/data model
• Make it accessible via API
• OpenSQL is still an API, but…
• do not code logic into the
statement
• use CDS Views instead
– “The truth lays inside the views”
7. Consumption and Use-Cases
• CDS may act as a read-only BO
• Is the 1st choice for analytical
processes
• Enables full code pushdown of
business logic to the database
• Can be consumed in different ways
• ABAP
• OData via Annotation or SAP Gateway
• BEx BW Tools
• …
CDS
Function
Module
SAP BW
VirtualProvider
SAP BEx Query
Business User
SAP BEx Tools
Fiori App SAP Gateway
ABAP
Floorplan Manager
No embedded BW in S/4HANA !
8. CDS – phase of activation
There is a theory which states that if ever anyone discovers exactly what CDS
activation does, it will instantly disappear and be replaced by something even more
bizarre and inexplicable…
9. Activation of a CDS Parameter-View
HDB on NetWeaver 7.50 SP3
• There is no specification of SQL
database views supporting
parameters
• Due to this a parameter view
becomes a complex native artifact
• A function object with a table as a
result set has to be created
• On HDB the definition of the
function is generated in SQLScript
10. There is a theory which states that if ever anyone discovers exactly
what CDS activation does, it will instantly disappear and be replaced by
something even more bizarre and inexplicable.
- There is another theory which states
that this has already happened.
Activation of a CDS Parameter-View
Oracle on NetWeaver 7.40 SP11
11. DROP TABLE "Z_DATATABLE“
error in DDL statement for "Z_DATATABLE“
SQL-error "-478-[IBM][CLI Driver][DB2] ALTER,
DROP, OR REVOKE AFFECTING OBJECT TYPE FUNCTION
CANNOT BE PROCESSED BECAUSE OBJECT
SAPR3.Z_DATAVIEW OF TYPE FUNCTION IS DEPENDENT ON
IT" in DDL statement for "Z_DATATABLE"
--------------- DB-ROLLBACK() ---------------
error in DDL, nametab for "Z_DATATABLE" not
activated
…after activation on Oracle:
Here comes DB2 on zOS
Problem description
• Extending/Modifying a database table during
SAINT yields to an upgrade error during
activation phase
DBMS- specific Lifecycle management
Trans.
Table
Trans.
Table
CDS View
W. Parameters
<dependency>
Unhandled
dependencies between
native artifacts!
“[IBM][CLI Driver][DB2] SQL0101N The statement is too
long or too complex.”
12. The walk of pain
Avoid ABAP CDS in an heterogeneous DBMS landscape
13. CDS on NetWeaver 7.40
“The Walk of pain”
Dec 2015 Jun 2016 Nov 2016
2331160 - Renaming of CDS artifacts in
customer systems
https://launchpad.support.sap.com/#/notes/23
31160
Still 3x open incidents in system
upgrade process / SPAM breaks
• DB2/zOS
• DB2
• Upgrade-Performance
SAINT/SPAM breaks during activation phase
• incorrect order of activation
• wrong quantity of activation
• problems with cyclic dependencies
• problems after renaming of views
• SELECT *
Problems while upgrading to
NetWeaver 7.50:
• undocumented change of CDS
specification (order of key attributes)
SAINT/SPAM breaks during activation phase
• incorrect order of activation
Development Track
14. Small selection of “hitting” notes
• Note 2240326 - Cycle problems during activation of CDS views
• cycles are subject to “some restrictions” No documentation at that time
• Notes 2295005 - Data element change for table does not result in reactivation of all DDL sources during transport
2381956 - Inconsistent 'SELECT *' CDS views
2274996 - Problems with deletion of table or view fields with select * dependencies
• „Select-Star is for looser“
• Note 2239157 - Support of database features
• „Official“ GA of CDS Views with parameters in NetWeaver 7.50 on AnyDB What about the introduction in 7.40 SP8?
• Note 2331160 - Renaming of CDS artifacts in customer systems
• CDS Views could be renamed DDLS, CDS-Name, DDIC-Name (DDIC-Rename is always prohibited)
• Note 2387971 - Incompatible ABAP changes from Release 7.40 to 7.50
• Since NetWeaver 7.50 all key attributes must be located together at the start of SELECT
15. ABAP Core Data Services is a key technology
CDS goes further
• CDS let you define a VDM – virtual data model
under S/4HANA (BO 1st)
• HDB supports the definition of ABAP CDS table
functions
• Which solves a lack of AMDPs
• CDS Test Double Framework
• The upcoming S/4HANA programming model
depends heavily on CDS Views
• The draft concept combines CDS and BOPF for
transactional Fiori-Applications and is triggered by CDS
annotations
Recommendations using CDS
Recommendations based on our experiences:
• CDS > NetWeaver 7.40 > AnyDB
• Do not built huge view hierarchies (< 5 level, not more
than 10 views)
• Do not use parameters!
• Avoid cycles in associations
• Perform activation tests on each dbms target platform
• CDS > NetWeaver 7.50 > AnyDB
• We will see…
• CDS > NetWeaver 7.50 > HANA
• No restrictions
• CDS > NetWeaver 7.51 S/4HANA
• rocks
16. So Long, and Thanks for All the Fish
Daniel Ridder
@nielseabap