CDS views are database views defined directly in SAP ABAP layer. They use SQL-like syntax and provide robust data modeling capabilities. CDS views are essential for modern data modeling in SAP S/4HANA
Data model describes data elements and their relationships. Semantic data assigns meaning to data through relationships. SDM is a conceptual model capturing database's semantic description
ERD visually represents relationships between entities in a database. Entities are real-world objects uniquely identified in database. Strong entities are represented by rectangles, weak entities by double rectangles
SDM is a high-level database description capturing application environment meaning. Describes entities, classifications, and structural interconnections in database. Allows same information to be viewed in multiple ways. Enhances effectiveness and usability of database systems
Data modeling helps construct and manage data for business operations. Tools provide standardized schemas and formal modeling techniques. Hevo offers seamless integration and transformation features
Originally developed by Logic Works in 1993. Acquired by Platinum Technology (1998-1999) and then Computer Associates (1999-2016). Parallax Capital Partners acquired erwin in 2016. Sold to Quest Software in 2020