TEMDB is a standard SAP Table which is used to store IS-U Mig.: Structure of Automation Data data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The TEMDB table consists of various fields, each holding specific information or linking keys about IS-U Mig.: Structure of Automation Data data available in SAP. These include OBJECT (Migration Object), A_LEVEL (Level in a structure), A_NODE (Nodes within a structure level), N_LEVEL (Level in a structure)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .