SAP HANA provides two important features for data modeling and analytics: AMDP (ABAP Managed Database Procedures) and CDS (Core Data Services) Views. Both of these features are commonly used in S/4HANA for different purposes.

AMDP is an ABAP language feature that allows developers to write database procedures directly in ABAP code. AMDP procedures can be used to execute complex database operations, such as joins and aggregations, and can be used to build efficient and optimized data models. AMDP is commonly used in S/4HANA to implement complex business logic and to improve performance for complex data models.

CDS Views, on the other hand, provide a way to define database structures and query definitions in a simple, declarative manner. CDS Views can be used to define data models and analytics, and can be easily consumed by other applications or tools. CDS Views also support complex operations like joins and aggregations, and provide a wide range of features for data modeling and analytics. CDS Views are commonly used in S/4HANA to implement data models and analytics, and to provide data for reporting and visualization.

In summary, AMDP and CDS Views are both important features in SAP HANA for data modeling and analytics. While AMDP is used to write complex database procedures directly in ABAP code, CDS Views are used to define data structures and queries in a declarative way. Both of these features are commonly used in S/4HANA for different purposes, and can be used in combination to build efficient and optimized data models.