Field & Related Field Fixed Relations

Field Fixed relation

Suppose we have three tables

1) Player Table  2) Footballer 3) Cricketer

Player Table with following fields

• PlayerName (string)
• PlayerBenefits(string)
• Player Type(Enum  contains Cricketer and Footballer)

FootBaller Table with following fields

• Category (Enum contain A,B,C)
• FootBallerCode(string)
• Salary (real)

Cricketer Table with following fields

• Category (Enum contain A,B,C)
• CricCode(string)
• Salary (real)

Here is how they all created:

Now populate some data in Footballer and Cricketer table

Scenario

Now For Player Table

If we select  ‘Player Type’ = Footballer then on Player Benefits field on the Player table ,lookup should be open showing the records of footballer and similiary with the case of cricketer,for this to achieve we can use the relation called ‘Fixed field’ to accomplish this.

So go to the Player table under realtion node and create a field fixed relation and here it is what I have done

• It says that  PlayterTable.PlayerType ==0(since Player Type(Enum  contains Cricketer which has a value in database equal ‘1’ and Footballer has ‘0’) you can verify by navigating to base enum and view its properties,
• So it mean if the PlayerTable.PlayerType == Footballer then

PlayerTable.PlayerBenefits == Footballer.FootballerCode(shows the lookup of Footballer data)

And similar is the case with Cricketer see below now

So now lets insert some data on Player table

And

Related Field Fixed

Note: below is copied from external resource

This relation restricts the records selected in the related table. Only records that meet the condition are selected.
The condition is ANDed with your relation.

Secondary table filtration can be done on the basis of relation set using related field fixed.

Example:
Primary Table:tableA(col1,col2,col3)
Secondry Table:tableB(col4,col5,col6)-col5 is an enum & can contain values 0,1,2.

tableB has 6 records as following

col4      col5     col6
1)      —           0          —
2)      —           1          —
3)      —           2          —
4)      —           1          —
5)      —           0          —
6)      —           1          —

We can set the related field fixed relation in tableA as
1==tableB.col5

It will give the lookup of 3 records of tableB i.e. 2,4 & 6th records.

Based on similar understanding I have implemented following

 So we have four records in InventoryPhoneTable

But when we click the look up,only showing two record