PROJS_ENQ 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 "Lock key for standard WBS" 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_PROJS_ENQ TYPE PROJS_ENQ.
The PROJS_ENQ table consists of various fields, each holding specific information or linking keys about Lock key for standard WBS data available in SAP. These include TYP (Object type, projects), PSPID (Project definition for standard project)... 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. .