SCHEDEV is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Scheduling Times SD/WS" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_SCHEDEV TYPE SCHEDEV.
The SCHEDEV table consists of various fields, each holding specific information or linking keys about Scheduling Times SD/WS data available in SAP. These include DATE_LOCAL (Scheduling date (local)), TIME_LOCAL (Scheduling time), TIMESTAMP (Time stamp in scheduling), TZONE (Time zone of schedluing time)... 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. .