FPSBASE.SCH_P_CURR_DURABLE_FAMILIES

FACILITY

Facility is included in almost every join in the DWH so this represents a definitive split. A route must have all steps on tools in the same facility. A tool must process all lots in the same facility. If your site has multiple buildings where lots run on routes using tools in multiple buildings then everything should be one facility. For example, multiple Fab buildings. But if your site has independent facilities like Fab and Test and Assembly where lot may progress from one to the next but on different routes then these should be different facilities. Since this column is in virtually every table it is critical that the value here is exactly matches what is in the MES if the MES has facility. Use facility_display for the display friendly name displayed in applications. See site_name comment for client/site/facility example. (* inherited from FPSINPUT.GEN_FACILITIES)

SCHED_GROUP

This is the grouping of tools and processes which the FPS Scheduler schedules together. Since this is a parent of tool via tool->process_group and a parent of process via process->process_group, by definition each tool and each process can only be in one sched group. We need all related tools and processes to be in the same sched group for efficient scheduling. One example is sinks and furnaces because of queue times and batching. Another example is for smaller facilities like Assembly or Test where we might schedule the entire facility together. (* inherited from FPSINPUT.RTG_PROCESS_GROUPS)

DURABLE_FAMILY

Durable_family indicates what durable is required by the process. When multiple durables are in a family any of them can be used. Typically there is only one reticle per family and therefore the durable and durable_family are the same. The exception would be a high running product with backup reticles. However for probe cards it is common to have several cards for each product so we have several durables with the same family. (* inherited from FPSINPUT.RTG_DURABLE_FAMILIES)

DURABLE_GROUP

Durable group is the parent of family and the child of class and its only use is to track the time to change durables. In many cases, group will be the same as class. An example where group would be different than class is where we have different reticles for different stepper manufacturers so the durable_group would be Nikon or Canon or ASML while the durable_class would be DURABLE. (* inherited from FPSINPUT.RTG_DURABLE_GROUPS)

DURABLE_CLASS

The class of the durable becomes important when we have multiple durables assigned in RTG_DURABLE_ASSIGNMENTS. If these durables are in different classes then we know that both of them are required. For example, a tester might require both a probe card and an electrical board. If these durables are in the same class then we use the is_multiple_required field to determine whether we will choose either or need both. (* inherited from FPSINPUT.RTG_DURABLE_CLASSES)