I wont believe you if you say that you are an administrator or HANA developer in fact even if you are even closely related to database and you have not heard of SCHEMAS. If you don't know about schemas in database refer this Database Schema , but Let me quote the part I want to drop your focus to from the mentioned page. " A database schema is the skeleton structure that represents the logical view of the entire database. It defines how the data is organized and how the relations among them are associated. It formulates all the constraints that are to be applied on the data. " Physical Database Schema − This schema pertains to the actual storage of data and its form of storage like files, indices, etc. It defines how the data will be stored in a secondary storage. Logical Database Schema − This schema defines all the logical constraints that need to be applied on the data stored. It defines tables, views, and integrity constraints. Let's dive in back in HANA and Sch