PROJ_PD 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 "Progress and Milestones:Project Definition" 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_PROJ_PD TYPE PROJ_PD.
The PROJ_PD table consists of various fields, each holding specific information or linking keys about Progress and Milestones:Project Definition data available in SAP. These include PLFAZ (Project planned start date), PLSEZ (Project planned finish date), SPROG (Forecast start date of project definition), EPROG (Forecast finish date for project definition)... 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. .