B
bachamp
Guest
Engineers and databases, not a good mix...
I’m a newbie to Access, I have done some simple things but I now have to do something that is out of my league.
I work in an engineering company and I'm trying to make a database that the engineers can select a specification quickly, a specification or spec is like a table. Things like materials, ratings, pipe Schedule, etc are stored in it. The spec says how strong a pipe will be.
When selecting a spec you have to look at the service (what the pipe is caring, eg high pressure steam, or low pressure water). Services also store things like Design Temperature and Design Pressure.
You are giving the Service, and you have to select a spec that will be able to handle the Design pressures. To do this you compare the Design pressure to the Maximum allowable Pipe pressure (it is calculated at the join (flange) as this is the weakest point).
One other pike of information is the Tables that have the Maximum allowable Pressure. To find the Maximum allowable Pressure, you need to know the Material, Rating and the Design Temperature. Each material has its own table.
If you have a look at the attached file then in tables, SPec has Spec ID (Spec) which is Primary Key. Flange Material (FlangeMat) and Flange Rating (FlangeRating).
The Flange Material should take you to another table, FlangeMat. This table is used to get you to the correct Maximum allowable Pressure table.
There are 2 Maximum allowable Pressure Tables, TABLE_211 and TABLE 212. Here the rest of the information from the Spec is needed (Flange Rating (these are the field names with 150, 300, 1500, etc numbers)). And also the Design Temperature is needed of the service.
Then it looks up the Maximum allowable Pressure from the Table and displays it. I was thinking a form.
Also the design Pressure needs to be displayed so the engineer can compare the two.
So for the form, there will need to be a drop down that has the Service, A drop down that has the Spec, and the two values, the Design Pressure and the Maximum allowable pressure.
All I have done is shown on the file, I started to play around with the Relationships and tried to create a Form but I could not get it to work so. I deleted it and left it with just the tables. If possible can someone please help me, maybe even get my file to work and the post the working one, I will then be able to understand it.
I’m a newbie to Access, I have done some simple things but I now have to do something that is out of my league.
I work in an engineering company and I'm trying to make a database that the engineers can select a specification quickly, a specification or spec is like a table. Things like materials, ratings, pipe Schedule, etc are stored in it. The spec says how strong a pipe will be.
When selecting a spec you have to look at the service (what the pipe is caring, eg high pressure steam, or low pressure water). Services also store things like Design Temperature and Design Pressure.
You are giving the Service, and you have to select a spec that will be able to handle the Design pressures. To do this you compare the Design pressure to the Maximum allowable Pipe pressure (it is calculated at the join (flange) as this is the weakest point).
One other pike of information is the Tables that have the Maximum allowable Pressure. To find the Maximum allowable Pressure, you need to know the Material, Rating and the Design Temperature. Each material has its own table.
If you have a look at the attached file then in tables, SPec has Spec ID (Spec) which is Primary Key. Flange Material (FlangeMat) and Flange Rating (FlangeRating).
The Flange Material should take you to another table, FlangeMat. This table is used to get you to the correct Maximum allowable Pressure table.
There are 2 Maximum allowable Pressure Tables, TABLE_211 and TABLE 212. Here the rest of the information from the Spec is needed (Flange Rating (these are the field names with 150, 300, 1500, etc numbers)). And also the Design Temperature is needed of the service.
Then it looks up the Maximum allowable Pressure from the Table and displays it. I was thinking a form.
Also the design Pressure needs to be displayed so the engineer can compare the two.
So for the form, there will need to be a drop down that has the Service, A drop down that has the Spec, and the two values, the Design Pressure and the Maximum allowable pressure.
All I have done is shown on the file, I started to play around with the Relationships and tried to create a Form but I could not get it to work so. I deleted it and left it with just the tables. If possible can someone please help me, maybe even get my file to work and the post the working one, I will then be able to understand it.
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